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81 results on '"Alexandre Bouhelier"'

1. Conformational Changes and Charge Transfer in Biomolecules Resolved Using Dynamic Enhanced Raman Correlation Spectroscopy

Author

Alexandre Bouhelier, Eric Finot, Aymeric Leray, Jean-Emmanuel Clément, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), and Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Static Electricity, Molecular Conformation, Metal Nanoparticles, 02 engineering and technology, Péclet number, Spectrum Analysis, Raman, 010402 general chemistry, 01 natural sciences, symbols.namesake, Adsorption, Materials Chemistry, Molecule, Physical and Theoretical Chemistry, Diffusion (business), chemistry.chemical_classification, Quantitative Biology::Biomolecules, Biomolecule, Tryptophan, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, chemistry, Chemical physics, symbols, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Gold, 0210 nano-technology, Raman spectroscopy, Two-dimensional nuclear magnetic resonance spectroscopy
Abstract

International audience; In this contribution, we report that conforma-tional changes of molecules that are often buried in a wide-distributed Gaussian distribution can be discerned by analyzing the dynamics of specific Raman lines. We investigate the pertinence of the auto-and cross-correlation functions applied to the dynamics of three Raman lines of an amino acid, the tryptophan. The cross-correlation between intensity and the Raman band is an indicator of the charge transfer during the diffusion limited reaction of tryptophan and the gold surface. The Pećlet number Pe can provide a valuable indicator of the convective and/or diffusive features of each Raman band. Adsorption induced conformation changes can be identified using the autocorrelation of the multiples states within the Raman band centered at 1550 cm −1 .

Published
2019
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2. Measuring the magnetic dipole transition of single nanorods by spectroscopy and Fourier microscopy

Author

G. Colas des Francs, Jeongmo Kim, Jongwook Kim, Alexandre Bouhelier, Thierry Gacoin, Khalid Lahlil, S. Mathew, Reinaldo Chacon, Aymeric Leray, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique de la matière condensée (LPMC), and École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Magnetic dipole transition, Nanophotonics, General Physics and Astronomy, Physics::Optics, FOS: Physical sciences, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, Dipole, Crystal field theory, 0103 physical sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Nanorod, Emission spectrum, 010306 general physics, 0210 nano-technology, Spectroscopy, Magnetic dipole
Abstract

International audience; Rare-earth doped nanocrystals possess optical transitions with significant either electric or magnetic dipole characters. They are of considerable interest for understanding and engineering light-matter interactions at the nanoscale with numerous applications in nanophotonics. Here, we study the 5 D 0 → 7 F 1 transition dipole vector in individual NaYF 4 : Eu 3+ nanorod crystals by Fourier and confocal micro-scopies. A single-crystal host matrix leads to narrow emission lines at room temperature that permit separation of the Stark sublevels resulting from the crystal-field splitting. We observe a fully magnetic transition and low variability of the transition dipole orientation over several single nanorods. We estimate the proportion of the dipole transitions for the Stark sublevels. We also determine an effective altitude of the rod with respect to the substrate. The narrow emission lines characteristic of NaYF 4 : Eu 3+ ensure well-defined electric or magnetic transitions, and are thus instrumental for probing locally their electromagnetic environment by standard confocal microscopy.

Published
2021
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3. Wave-vector analysis of plasmon-assisted distributed nonlinear photoluminescence along Au nanowires

Author

G. V. Pavan Kumar, Julien Barthes, Alexandre Bouhelier, Adrian Agreda, Deepak Sharma, Gérard Colas des Francs, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), and Indian Institute of Science Education and Research Pune (IISER Pune)

Subjects
Materials science, Microscope, Photoluminescence, Nanowire, FOS: Physical sciences, Physics::Optics, 02 engineering and technology, 01 natural sciences, Molecular physics, law.invention, Condensed Matter::Materials Science, law, 0103 physical sciences, Wave vector, [NLIN]Nonlinear Sciences [physics], [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, Plasmon, Scattering, 021001 nanoscience & nanotechnology, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Surface plasmon polariton, 3. Good health, Transverse plane, 0210 nano-technology, Optics (physics.optics), Physics - Optics
Abstract

We report a quantitative analysis of the wavevector diagram emitted by nonlinear photoluminescence generated by a tightly focused pulsed laser beam and distributed along Au nanowire via the mediation of surface plasmon polaritions. The nonlinear photoluminescence is locally excited at key locations along the nanowire in order to understand the different contributions constituting the emission pattern measured in a conjugate Fourier plane of the microscope. Polarization-resolved measurements reveal that the nanowire preferentially emits nonlinear photoluminescence polarized transverse to the long axis at close to the detection limit wavevectors with a small azimuthal spread in comparison to the signal polarized along the long axis. We utilize finite element method to simulate the observed directional scattering by using localized incoherent sources placed on the nanowire. Simulation results faithfully mimic the directional emission of the nonlinear signal emitted by the different portions of the nanowire., 8 pages, 8 figures

Published
2020
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4. Electrostatic Control over Optically Pumped Hot Electrons in Optical Gap Antennas

Author

Alexander V. Uskov, Igor V. Smetanin, Adrian Agreda, Alexandre Bouhelier, Sviatlana Viarbitskaya, Gérard Colas des Francs, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS), and Russian Academy of Sciences [Moscow] (RAS)

Subjects
Materials science, Metrics & More Article Recommendations nonlinear photoluminescence, surface charge density, 02 engineering and technology, 01 natural sciences, nonlinear plasmonics, Electric field, 0103 physical sciences, optical gap antennas, [NLIN]Nonlinear Sciences [physics], Electrical and Electronic Engineering, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, Nanoscopic scale, business.industry, Charge density, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Nonlinear system, Optoelectronics, Antenna (radio), 0210 nano-technology, business, Hot electron, Excitation, hot electrons, Biotechnology
Abstract

International audience; We investigate the influence of a static electric field on the incoherent nonlinear response of an unloaded electrically contacted nanoscale optical gap antenna. Upon excitation by a tightly focused near-infrared femtosecond laser beam, a transient elevated temperature of the electronic distribution results in a broadband emission of nonlinear photoluminescence (N-PL). We demonstrate a modulation of the yield at which driving photons are frequency up-converted by means of an external control of the electronic surface charge density. We show that the electron temperature and consequently the N-PL intensity can be enhanced or reduced depending on the command polarity and the strength of the control static field. A modulation depth larger than 100% is observed for activation voltages of a few volts.

Published
2020
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5. Coherent Excitation of Optical Oscillations in a Metal Nanosphere by a 2D Electric Current

Author

Alexandre Bouhelier, Alexander V. Uskov, and I. V. Smetanin

Subjects
Physics, Drift velocity, Condensed matter physics, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Plasma oscillation, 01 natural sciences, Surface plasmon polariton, Instability, Atomic and Molecular Physics, and Optics, symbols.namesake, Maxwell's equations, 0103 physical sciences, Dissipative system, symbols, 010306 general physics, 0210 nano-technology, Engineering (miscellaneous), Plasmon, Excitation
Abstract

We propose a new concept of localized surface plasmon polariton (SPP) mode excitation in a spherical nanoparticle, which utilizes a collective mechanism of dissipative instability in an adjacent 2D plasma carrying a DC electric current. We show that 2D DC current becomes unstable at optical frequencies when the drift velocity exceeds the speed of sound in the 2D plasma. Dissipative instability emerges as a result of self-consistent 2D plasma oscillations coupled to the electromagnetic modes of the nanosphere, the material of which is absorbing at given frequency (i.e., the dielectric permittivity Ime > 0), and instability is absent in the case of transparent material. We derive the dispersion equation for this dissipative instability by a self-consistent solution of the Maxwell equations for the electromagnetic modes and the hydrodynamic equations for the 2D plasma current. Our estimates demonstrate attainment of very high instability increments Imω ~ 1015 s−1, which makes the proposed concept very promising for excitation of plasmonic nanoantennas.

Published
2018
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6. Delocalized Hot Electron Generation with Propagative Surface Plasmon Polaritons

Author

Olivier Demichel, Renato Juliano Martins, Marlène Petit, Adrian Agreda, Jean-Claude Weeber, Alexandre Bouhelier, Romain Hernandez, Benoit Cluzel, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), and Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Physics::Optics, 02 engineering and technology, 01 natural sciences, 7. Clean energy, law.invention, 010309 optics, Delocalized electron, law, 0103 physical sciences, Electrical and Electronic Engineering, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Plasmon, ComputingMilieux_MISCELLANEOUS, Range (particle radiation), Plasmonic nanoparticles, business.industry, Surface plasmon, 021001 nanoscience & nanotechnology, Surface plasmon polariton, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Optoelectronics, Astrophysics::Earth and Planetary Astrophysics, 0210 nano-technology, business, Waveguide, Excitation, Biotechnology
Abstract

Hot electrons generated within plasmonic structures possess a high kinetic energy that can be employed to drive and catalyze a huge range of physicochemical processes at the metallic interface. Up to now, these photogenerated hot carriers were mainly generated within simple plasmonic nanoparticles where hot carrier localization coincides spatially with the position optical excitation. A current challenge for the development of future plasmonic-based hot electron devices requires the ability for a delocalized hot carrier production to control on a large-distance their spatial distribution. Here, we demonstrate the remote generation of hot electrons by launching a propagative surface plasmon on a gold waveguide. Such hot carriers can be produced at distances of several microns from the excitation. Moreover, using far- and near-field hyperspectral microscopy, we show that hot carriers present spatial and energy distributions driven by the propagating plasmon field distribution itself. This opens the door to ...

Published
2019
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7. Effect of quantized conductivity on the anomalous photon emission radiated from atomic-size point contacts

Author

Mickaël Buret, Gérard Colas des Francs, Alexandre Bouhelier, Alexander V. Uskov, Igor V. Smetanin, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS), and Russian Academy of Sciences [Moscow] (RAS)

Subjects
Photon, QC1-999, FOS: Physical sciences, 02 engineering and technology, bremsstrahlung, 01 natural sciences, 7. Clean energy, Electromagnetic radiation, electromigration, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 0103 physical sciences, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Electrical and Electronic Engineering, Exponential decay, 010306 general physics, Physics, Condensed Matter - Mesoscale and Nanoscale Physics, quantized conductivity, Bremsstrahlung, Conductance, visible light emission, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Light intensity, Atomic radius, point contact, Light emission, Atomic physics, 0210 nano-technology, Optics (physics.optics), Biotechnology, Physics - Optics
Abstract

We observe anomalous visible to near-infrared electromagnetic radiation emitted from electrically driven atomic-size point contacts. We show that the number of photons released strongly depends on the quantized conductance steps of the contact. Counter-intuitively, the light intensity features an exponential decay dependence with the injected electrical power. We propose an analytical model for the light emission considering an out-of-equilibrium electron distribution. We treat photon emission as bremsstrahlung process resulting from hot electrons colliding with the metal boundary and a find qualitative accord with the experimental data., Main manuscript plus supplementary information

Published
2019
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8. Spatial Distribution of the Nonlinear Photoluminescence in Au Nanowires

Author

Olivier Demichel, G. V. Pavan Kumar, Deepak Sharma, Jean-Claude Weeber, Benoit Cluzel, Alexandre Bouhelier, Gérard Colas des Francs, Adrian Agreda, Romain Hernandez, Sviatlana Viarbitskaya, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), and Indian Institute of Science Education and Research Pune (IISER Pune)

Subjects
Materials science, Photoluminescence, Spectral signature, Surface plasmon, Nanowire, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, Surface plasmon polariton, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, 010309 optics, Excited state, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], 0103 physical sciences, Femtosecond, Emission spectrum, Electrical and Electronic Engineering, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 0210 nano-technology, ComputingMilieux_MISCELLANEOUS, Biotechnology
Abstract

When gold nanowires are excited with a tightly focused femtosecond laser a distributed nonlinear photoluminescence (N-PL) develops throughout the entire structure. A complete spaced-resolved analysis of the spectral signature of the nanowire nonlinear response is carried out to understand the origin of the distributed nonlinear response. We discuss various mechanisms to explain the experimental data and unambiguously demonstrate that the spatial and spectral extension of the N-PL in the nanowire are mainly dictated by the propagation of a surface plasmon excited at the pump wavelength. We also present experimental signature of near-field excitation of a broadband continuum of surface plasmons excited locally throughout the N-PL emission spectrum.

Published
2019
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9. Spectral pointillism of enhanced Raman scattering for accessing structural and conformational information on single protein

Author

Alexandre Bouhelier, Eric Finot, Jean-Emmanuel Clément, and Aymeric Leray

Subjects
Protein Conformation, General Physics and Astronomy, Complete protein, 02 engineering and technology, Spectrum Analysis, Raman, 010402 general chemistry, 01 natural sciences, Spectral line, symbols.namesake, Protein structure, Animals, Amino Acids, Physical and Theoretical Chemistry, Bovine serum albumin, chemistry.chemical_classification, biology, Chemistry, Tryptophan, Serum Albumin, Bovine, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Amino acid, Crystallography, biology.protein, symbols, Cattle, 0210 nano-technology, Raman spectroscopy, Raman scattering
Abstract

In this contribution, we provide new insights on the temporal fluctuations of surface enhanced Raman spectra (SERS) of large single molecules such as proteins. Because they can only fit partly into small active volume, SERS analysis is referred to spectral pointillism where only protein subdomains are shined and the whole protein landscape is built from the dynamics of successive individual spectra. By applying our approach on bovine serum albumin, we show that single protein subdomains are mostly comprised of three distinct amino acids. Surface amino acids such as lysine are preferentially detected in the open form of the protein. The investigation of the tryptophan Fermi doublet in the single protein regime is highly instructive on the protein conformation. We finally demonstrate that spectral pointillism enables to correlate individual amino acids with structural information.

Published
2017
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10. Discrimination between Single Protein Conformations Using Dynamic SERS

Author

Thibault Brulé, Eric Finot, Alexandre Bouhelier, and Alain Dereux

Subjects
Bioengineering, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Spectral line, symbols.namesake, Tyrosine, Bovine serum albumin, Instrumentation, Histidine, Fluid Flow and Transfer Processes, chemistry.chemical_classification, biology, Chemistry, Process Chemistry and Technology, Tryptophan, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Amino acid, Biochemistry, biology.protein, Biophysics, symbols, Leucine, 0210 nano-technology, Raman spectroscopy
Abstract

In biomedicine and biophysics, the discrimination of protein conformations is of critical importance for identifying the unfolding states in the diagnosis of neurodegenerative diseases. We develop a dynamic Raman spectroscopic approach based on a statistical analysis of the time series of spectral fingerprints of single protein. We show that the unfolded state of bovine serum albumin can be identified in the time series using the fluctuations of the Raman bands of some amino acids, tryptophan, tyrosine, leucine, and histidine, acting as biomarkers. The statistical analysis induces also the sorting between physisorption and chemisorption events. This is confirmed by the spectral analysis of the different characteristic spectra highlighted based on the amino acids fingerprints following, notably, the hydrophobicity

Published
2016
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11. Colloidal Quantum Dot Integrated Light Sources for Plasmon Mediated Photonic Waveguide Excitation

Author

Arunandan Kumar, Juan Arocas, Benoit Dubertret, Gérard Colas-des-Francs, F. Eloi, Alexandre Bouhelier, Jean-Pierre Hermier, Stéphanie Buil, Kamal Hammani, Jean-Claude Weeber, Michel Nasilowski, and Xavier Quélin

Subjects
Materials science, Physics::Optics, 02 engineering and technology, 01 natural sciences, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Electrical and Electronic Engineering, Plasmon, business.industry, Photonic integrated circuit, Surface plasmon, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Lens (optics), Quantum dot, Optoelectronics, Photonics, 0210 nano-technology, business, Waveguide, Excitation, Biotechnology
Abstract

We operate micron-sized CdSe/CdS core–shell quantum dot (QD) clusters deposited onto gold patches as integrated light sources for the excitation of photonic waveguides. The surface plasmon mode launched by the QD fluorescence at the top interface of the gold patches are efficiently coupled to photonic modes sustained by titanium dioxide ridge waveguides. We show that, despite a large effective index difference, the plasmonic and the photonic modes can couple with a very high efficiency provided the vertical offset between the two kinds of waveguides is carefully controlled. Based on the effective index contrast of the plasmonic and the photonic modes, we engineer in-plane integrated hybrid lenses. The hybrid lenses are obtained by shaping the contact interface between the plasmonic and the photonic waveguides. We demonstrate a 2-fold enhancement of the coupling efficiency for tapers equipped with a hybrid lens. Our results are expected to be useful for the development of low-cost, integrated light sources...

Published
2016
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12. Directional Second Harmonic Generation Controlled by Sub-wavelength Facets of an Organic Mesowire

Author

G. V. Pavan Kumar, Alexandre Bouhelier, Deepak Sharma, Ravi P. N. Tripathi, Shailendra K. Chaubey, Adarsh B. Vasista, and Jesil Jose Karumancheril

Subjects
FOS: Physical sciences, Physics::Optics, 02 engineering and technology, Condensed Matter - Soft Condensed Matter, 01 natural sciences, Signal, 010309 optics, Optics, 0103 physical sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), High harmonic generation, Electrical and Electronic Engineering, Engineering (miscellaneous), Physics, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Second-harmonic generation, Nonlinear optics, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Dipole, Nonlinear system, Excited state, Soft Condensed Matter (cond-mat.soft), 0210 nano-technology, business, Excitation, Optics (physics.optics), Physics - Optics
Abstract

Directional harmonic generation is an important property characterizing the ability of nonlinear optical antennas to diffuse the signal in well-defined region of space. Herein, we show how sub-wavelength facets of an organic molecular mesowire crystal can be utilized to systematically vary the directionality of second harmonic generation (SHG) in the forward scattering geometry. We demonstrate this capability on crystalline diamonoanthraquinone (DAAQ) mesowires with subwavelength facets. We observed that the radial angles of the SHG emission can be tuned over a range of 130 degrees. This angular variation arises due to spatially distributed nonlinear dipoles in the focal volume of the excitation as well as the geometrical cross-section and facet orientation of the mesowire. Numerical simulations of the near-field excitation profile corroborate the role of the mesowire geometry in localizing the electric field. In addition to directional SHG from the mesowire, we experimentally observe optical waveguiding of the nonlinear two-photon excited fluorescence (TPEF). Interestingly, we observed that for a given pump excitation, the TPEF signal is isotropic and delocalized, whereas the SHG emission is directional and localized at the location of excitation. All the observed effects have direct implications not only in active nonlinear optical antennas, but also in nonlinear signal processing., Accepted in Applied Optics

Published
2018

13. Biased Nanoscale Contact as Active Element for Electrically Driven Plasmonic Nanoantenna

Author

Alexandre Bouhelier, Igor E. Protsenko, Mickaël Buret, Jacob B. Khurgin, Alexander V. Uskov, and Igor V. Smetanin

Subjects
Orders of magnitude (temperature), FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, Electromagnetic radiation, Ballistic conduction, 0103 physical sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Electrical and Electronic Engineering, 010306 general physics, Plasmon, Quantum tunnelling, Physics, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Biasing, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Optoelectronics, Light emission, 0210 nano-technology, Driven element, business, Biotechnology, Optics (physics.optics), Physics - Optics
Abstract

Electrically driven optical antennas can serve as compact sources of electromagnetic radiation operating at optical frequencies. In the most widely explored configurations, the radiation is generated by electrons tunneling between metallic parts of the structure when a bias voltage is applied across the tunneling gap. Rather than relying on an inherently inefficient inelastic light emission in the gap, we suggest to use a ballistic nanoconstriction as the feed element of an optical antenna supporting plasmonic modes. We discuss the underlying mechanisms responsible for the optical emission and show that, with such a nanoscale contact, one can reach quantum efficiency orders of magnitude larger than with standard light-emitting tunneling structures.

Published
2018

14. Electromigrated electrical optical antennas for transducing electrons and photons at the nanoscale

Author

Kamal Hammani, Juan Arocas, Jean-Claude Weeber, Alexander V. Uskov, Alexandre Bouhelier, Gérard Colas des Francs, Igor V. Smetanin, Arindam Dasgupta, M. Buret, Reinaldo Chacon, Nicolas Cazier, Laurent Markey, and Marie-Maxime Mennemanteuil

Subjects
Materials science, Photon, General Physics and Astronomy, 02 engineering and technology, Electron, lcsh:Chemical technology, 01 natural sciences, Electromigration, Atomic units, lcsh:Technology, Full Research Paper, electromigration, tunnel junction, Fowler–Nordheim, Tunnel junction, hot-electron emission, transition voltage, 0103 physical sciences, Nanotechnology, General Materials Science, lcsh:TP1-1185, Electrical and Electronic Engineering, 010306 general physics, lcsh:Science, Quantum tunnelling, inelastic electron tunneling, business.industry, lcsh:T, optical antennas, 021001 nanoscience & nanotechnology, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, lcsh:QC1-999, Nanoscience, Optoelectronics, Light emission, lcsh:Q, Photonics, 0210 nano-technology, business, lcsh:Physics
Abstract

Background: Electrically controlled optical metal antennas are an emerging class of nanodevices enabling a bilateral transduction between electrons and photons. At the heart of the device is a tunnel junction that may either emit light upon injection of electrons or generate an electrical current when excited by a light wave. The current study explores a technological route for producing these functional units based upon the electromigration of metal constrictions.Results: We combine multiple nanofabrication steps to realize in-plane tunneling junctions made of two gold electrodes, separated by a sub-nanometer gap acting as the feedgap of an optical antenna. We electrically characterize the transport properties of the junctions in the light of the Fowler–Nordheim representation and the Simmons model for electron tunneling. We demonstrate light emission from the feedgap upon electron injection and show examples of how this nanoscale light source can be coupled to waveguiding structures.Conclusion: Electromigrated in-plane tunneling optical antennas feature interesting properties with their unique functionality enabling interfacing electrons and photons at the atomic scale and with the same device. This technology may open new routes for device-to-device communication and for interconnecting an electronic control layer to a photonic architecture.

Published
2018

15. Designing plasmonic eigenstates for optical signal transmission in planar channel devices

Author

Gérard Colas des Francs, Upkar Kumar, Aurélien Cuche, Alexandre Bouhelier, Erik Dujardin, Sreenath Bolisetty, Christian Girard, Sviatlana Viarbitskaya, Raffaele Mezzenga, Centre d'élaboration de matériaux et d'études structurales ( CEMES ), Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), ETH Zurich, Department of Health Sciences and Technology, Swiss Federal Institute of Technology in Zürich ( ETH Zürich ), ETH Zürich, Department of Health Sciences and Technology, Groupe NanoSciences (CEMES-GNS), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Nano-Optique et Nanomatériaux pour l'optique (CEMES-NeO), Department of Health Sciences and Technology [ETH Zürich] (D-HEST), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), and Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB)

Subjects
non-linear luminescence, surface plasmon, Nanophotonics, [ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], FOS: Physical sciences, Physics::Optics, 02 engineering and technology, 01 natural sciences, Signal, 010309 optics, LDOS, Delocalized electron, 0103 physical sciences, Transmittance, Electrical and Electronic Engineering, transmittance and routing devices, Plasmon, Physics, plasmonic eigenmodes, Condensed Matter - Materials Science, Mesoscopic physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Linear polarization, Surface plasmon, Materials Science (cond-mat.mtrl-sci), 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, 2D crystalline gold, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, 0210 nano-technology, business, Physics - Optics, Optics (physics.optics), Biotechnology
Abstract

International audience; On-chip optoelectronic and all-optical information processing paradigms require compact implementation of signal transfer for which nanoscale surface plasmons circuitry offers relevant solutions. This work demonstrates the directional signal transmittance mediated by 2D plasmonic eigenmodes supported by crystalline cavities. Channel devices comprising two mesoscopic triangular input and output ports and sustaining delocalized, higher-order plasmon resonances in the visible to infra-red range are shown to enable the controllable transmittance between two confined entry and exit ports coupled over a distance exceeding 2 μm. The transmittance is attenuated by > 20dB upon rotating the incident linear polarization, thus offering a convenient switching mechanism. The optimal transmittance for a given operating wavelength depends on the geometrical design of the device that sets the spatial and spectral characteristic of the supporting delocalized mode. Our approach is highly versatile and opens the way to more complex information processing using pure plasmonic or hybrid nanophotonic architectures.

Published
2017
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16. Significant decrease of the optical losses in the coupling between colloidal CdSe/CdS nanocrystals and a flat gold film at cryogenic temperature

Author

Alexandre Bouhelier, J.-C. Weeber, Jean-Pierre Hermier, Benoit Dubertret, Michel Nasilowski, Stéphanie Buil, Xavier Quélin, A. Coste, F. Eloi, Christophe Arnold, G. Colas des Francs, Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Développement et physiopathologie de l'intestin et du pancréas, Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Groupe d'Etude de la Matière Condensée (GEMAC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) (LPEM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, business.industry, Gold film, Nanotechnology, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Coupling (electronics), Colloid, Nanocrystal, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], 0103 physical sciences, Optoelectronics, 010306 general physics, 0210 nano-technology, Cryogenic temperature, business, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017
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17. Local field enhancement and thermoplasmonics in multimodal aluminum structures

Author

Peter R. Wiecha, Jérôme Plain, Alexandre Bouhelier, Jérôme Martin, Arnaud Arbouet, Davy Gérard, Aurélien Cuche, Marie-Maxime Mennemanteuil, Dmitry Khlopin, Nano-Optique et Nanomatériaux pour l'optique ( CEMES-NeO ), Centre d'élaboration de matériaux et d'études structurales ( CEMES ), Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Nano Optics and Near-field spectroscopy Group, King‘s College London, Laboratoire de Nanotechnologie et d'Instrumentation Optique ( LNIO ), Institut Charles Delaunay ( ICD ), Université de Technologie de Troyes ( UTT ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Technologie de Troyes ( UTT ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Nano-Optique et Nanomatériaux pour l'optique (CEMES-NeO), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Nanotechnologie et d'Instrumentation Optique (LNIO), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), and Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB)

Subjects
fano-resonant aluminum, Nanostructure, Photoluminescence, Materials science, Field (physics), FOS: Physical sciences, plasmonic materials, 02 engineering and technology, 7. Clean energy, 01 natural sciences, Optics, Electric field, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 0103 physical sciences, Thermal, nanostructures, ultraviolet, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], conversion, 010306 general physics, Plasmon, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Surface plasmon, nanoplasmonics, gold, 021001 nanoscience & nanotechnology, Polarization (waves), nanoprisms, nanoantennas, Optoelectronics, nanoparticles, 0210 nano-technology, business, [ PHYS.COND ] Physics [physics]/Condensed Matter [cond-mat]
Abstract

Aluminum nanostructures have recently been at the focus of numerous studies due to their properties including oxidation stability and surface plasmon resonances covering the ultraviolet and visible spectral windows. In this article, we reveal a new facet of this metal relevant for both plasmonics purpose and photo-thermal conversion. The field distribution of high order plasmonic resonances existing in two-dimensional Al structures is studied by nonlinear photoluminescence (nPL) microscopy in a spectral region where electronic interband transitions occur. The polarization sensitivity of the field intensity maps shows that the electric field concentration can be addressed and controlled on-demand. We use a numerical tool based on the Green dyadic method to analyze our results and to simulate the absorbed energy that is locally converted into heat. The polarization-dependent temperature increase of the Al structures is experimentally quantitatively measured, and is in an excellent agreement with theoretical predictions. Our work highlights Al as a promising candidate for designing thermal nanosources integrated in coplanar geometries for thermally assisted nanomanipulation or biophysical applications., 8 pages 6 figures main article; 7 pages 9 figures supporting informations

Published
2017
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18. Hot electrons and nonlinear optical nanoantennas

Author

Benoit Cluzel, Olivier Demichel, Alexandre Bouhelier, Regis Mejard, and Sviatlana Viarbitskaya

Subjects
Physics, Sum-frequency generation, business.industry, Optical physics, Physics::Optics, Resonance, Nonlinear optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, 010309 optics, Nonlinear system, Optics, Cross-polarized wave generation, 0103 physical sciences, Femtosecond, Optoelectronics, 0210 nano-technology, business, Plasmon
Abstract

The large field enhancement generated at the surface of a resonant plasmonic nanoparticle, or optical antennas, is the key mechanism that eventually led to the development of nonlinear plasmonics [1-2]. While the resonance may boost the nonlinear yield of an adjacent structure or surrounding medium, it was soon realized that optical antennas possess nonlinear coefficients comparable or exceeding those of standard nonlinear optical materials [3]. We discuss here two nonlinear optical processes — incoherent multi-photon luminescence (MPL) and coherent second-harmonic generation (SHG) — emitted from gold rod optical antennas upon local illumination with a tightly focused femtosecond near-infrared laser beam.

Published
2017
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19. Electrically-driven optical antennas enabled by mesoscopic contacts

Author

Mikael Buret, Alexander V. Uskov, Alexandre Bouhelier, Igor E. Protsenko, Jacob B. Khurgin, and Igor V. Smetanin

Subjects
Physics, Mesoscopic physics, Nanostructure, business.industry, Surface plasmon, Physics::Optics, Biasing, 02 engineering and technology, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 021001 nanoscience & nanotechnology, 01 natural sciences, Optics, Ballistic conduction, 0103 physical sciences, Light emission, 010306 general physics, 0210 nano-technology, business, Plasmon, Quantum tunnelling
Abstract

Electrically driven optical antennas are attracting much attention, in particular, due to necessity to develop integrated electrical source of surface plasmons for future plasmonic nanocircuitries. By default, this term denotes a metal nanostructure, in which electromagnetic oscillations at optical frequencies are excited by electrons, tunneling between metallic parts of the structure when a bias voltage is applied between them. Instead of relying on an inefficient inelastic light emission in a tunnel gap, we are suggesting to use ballistic nanoconstrictions as the feed element of an optical antennas in order to excite electromagnetic plasmonic modes. Similarly to tunneling structures, the voltage applied at the constriction falls over the contact of nanoscale length. Electron passing through the contact ballistically can gain the energy provided by the bias ~1eV and exchange it into an mode of the optical antenna. We discussed the underlying mechanisms responsible for the optical emission, and show that with nanoscale contact, one can reach quantum efficiency orders of magnitude larger than with standard tunneling structures.

Published
2017
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20. Plasmonic Purcell factor and coupling efficiency to surface plasmons. Implications for addressing and controlling optical nanosources

Author

Jean-Claude Weeber, Julien Barthes, Aurélien Cuche, C. Girard, Alexandre Bouhelier, G. Colas des Francs, Alain Dereux, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), Nano-Optique et Nanomatériaux pour l'optique (CEMES-NeO), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] ( LICB ), Université de Technologie de Belfort-Montbeliard ( UTBM ) -Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Nano-Optique et Nanomatériaux pour l'optique ( CEMES-NeO ), Centre d'élaboration de matériaux et d'études structurales ( CEMES ), Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (ICB), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SHS.INFO]Humanities and Social Sciences/Library and information sciences, Nanophotonics, FOS: Physical sciences, Physics::Optics, 02 engineering and technology, 01 natural sciences, Delocalized electron, Optics, Quantum mechanics, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 0103 physical sciences, [ SHS.INFO ] Humanities and Social Sciences/Library and information sciences, 010306 general physics, Plasmon, Physics, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Surface plasmon, Cavity quantum electrodynamics, Order (ring theory), Resonance, 021001 nanoscience & nanotechnology, Coupling (probability), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, 0210 nano-technology, business, Physics - Optics, Optics (physics.optics)
Abstract

The Purcell factor $F_p$ is a key quantity in cavity quantum electrodynamics (cQED) that quantifies the coupling rate between a dipolar emitter and a cavity mode. Its simple form $F_p\propto Q/V$ unravels the possible strategies to enhance and control light-matter interaction. Practically, efficient light-matter interaction is achieved thanks to either i) high quality factor $Q$ at the basis of cQED or ii) low modal volume $V$ at the basis of nanophotonics and plasmonics. In the last decade, strong efforts have been done to derive a plasmonic Purcell factor in order to transpose cQED concepts to the nanocale, in a scale-law approach. In this work, we discuss the plasmonic Purcell factor for both delocalized (SPP) and localized (LSP) surface-plasmon-polaritons and briefly summarize the expected applications for nanophotonics. On the basis of the SPP resonance shape (Lorentzian or Fano profile), we derive closed form expression for the coupling rate to delocalized plasmons. The quality factor factor and modal confinement of both SPP and LSP are quantified, demonstrating their strongly subwavelength behaviour., Comment: Journal of Optics (in press)

Published
2016
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21. Nanoscale constriction as a source of plasmons for plasmonic nanocircuitries

Author

Igor E. Protsenko, Alexander V. Uskov, Jacob B. Khurgin, Alexandre Bouhelier, M. Buret, and Igor V. Smetanin

Subjects
Physics, Mesoscopic physics, Astrophysics::High Energy Astrophysical Phenomena, 02 engineering and technology, Electron, 021001 nanoscience & nanotechnology, 01 natural sciences, Constriction, 0103 physical sciences, Light emission, Atomic physics, 010306 general physics, 0210 nano-technology, Nanoscopic scale, Plasmon
Abstract

We investigate spontaneous light emission by electrons passing through a nanoscale metal constriction and find that the Purcell-enhanced emission is engendered by two distinct mechanisms. In the first mechanism emission is caused by electron colliding with the effective potential of the mesoscopic contact while the second mechanism involves collisions of electrons with the walls of the constriction. We find that multiple collisions with the walls can lead to the orders-of-magnitude higher light emission probability in comparison to a single collision with the effective potential.

Published
2016
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22. Excitation of plasmonic nanoantennas by nonresonant and resonant electron tunnelling

Author

Igor E. Protsenko, I. V. Smetanin, Alexandre Bouhelier, Alexander V. Uskov, and Jacob B. Khurgin

Subjects
Orders of magnitude (temperature), FOS: Physical sciences, Physics::Optics, 02 engineering and technology, Electron, 01 natural sciences, 0103 physical sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Physics::Atomic and Molecular Clusters, General Materials Science, 010306 general physics, Quantum tunnelling, Plasmon, Common emitter, Physics, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Surface plasmon, 021001 nanoscience & nanotechnology, Surface plasmon polariton, 3. Good health, Optoelectronics, 0210 nano-technology, business, Excitation, Optics (physics.optics), Physics - Optics
Abstract

A rigorous theory of photon emission accompanied inelastic tunnelling inside the gap of plasmonic nanoantennas has been developed. The disappointingly low efficiency of the electrical excitation of surface plasmon polaritons in these structures can be increased by orders of magnitude when a resonant tunnelling structure is incorporated inside the gap. Resonant tunnelling assisted surface plasmon emitter may become a key element in future electrically-driven nanoplasmonic circuits., 7 pages, 6 figures

Published
2016

23. Energy-resolved hot carrier relaxation dynamics in monocrystalline plasmonic nanoantennas

Author

Marlène Petit, Olivier Demichel, Alexandre Bouhelier, Régis Méjard, Anthonin Verdy, and Benoit Cluzel

Subjects
Materials science, Photoluminescence, FOS: Physical sciences, Physics::Optics, 02 engineering and technology, 01 natural sciences, Monocrystalline silicon, symbols.namesake, Condensed Matter::Materials Science, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Plasmon, business.industry, Fermi level, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Picosecond, symbols, Relaxation (physics), Optoelectronics, 0210 nano-technology, Luminescence, business, Ultrashort pulse, Optics (physics.optics), Biotechnology, Physics - Optics
Abstract

Hot carriers are energetic photo-excited carriers driving a large range of chemico-physical mechanisms. At the nanoscale, an efficient generation of these carriers is facilitated by illuminating plasmonic antennas. However, the ultrafast relaxation rate severally impedes their deployment in future hot-carrier based devices. In this paper, we report on the picosecond relaxation dynamics of hot carriers in plasmonic monocrystalline gold nanoantennas. The temporal dynamics of the hot carriers is experimentally investigated by interrogating the nonlinear photoluminescence response of the antenna with a spectrally-resolved two-pulse correlation configuration. We measure time-dependent nonlinearity orders varying from 1 to 8, which challenge the common interpretation of multi-photon gold luminescence. We demonstrate that the relaxation of the photo-excited carriers depends of their energies relative to the Fermi level. We find a 60 % variation in the relaxation rate for electron-hole pair energies ranging from c.a. 0.2 to 1.8 eV. The quantitative relationship between hot carrier energy and relaxation dynamics is an important finding for optimizing hot carriers-assisted processes and shed new light in the intricacy of nonlinear photoluminescence in plasmonic structures.

Published
2016

24. Metal mesoscopic contact as a source of plasmons for plasmonic nanocircuitries

Author

Alexandre Bouhelier, Igor V. Smetanin, Jacob B. Khurgin, M. Buret, Alexander V. Uskov, and Igor E. Protsenko

Subjects
Mesoscopic physics, Materials science, Physics::Optics, Nanotechnology, 02 engineering and technology, Integrated circuit, Electron, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 021001 nanoscience & nanotechnology, 01 natural sciences, law.invention, Metal, Computer Science::Emerging Technologies, law, visual_art, 0103 physical sciences, visual_art.visual_art_medium, Stimulated emission, 010306 general physics, 0210 nano-technology, Nanoscopic scale, Computer Science::Databases, Quantum tunnelling, Plasmon
Abstract

We show that nanoscale metal contacts (constrictions) can serve as an efficient sources of plasmons for future nanoplasmonic integrated circuits. Electron, passing ballistically through nanoscale contact, can emit plasmons with the probability ∼0.1 due to multiple collisions with walls of the constriction.

Published
2016
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25. Sorting of Single Biomolecules based on Fourier Polar Representation of Surface Enhanced Raman Spectra

Author

Alexandre Bouhelier, Eric Finot, Gérard Colas des Francs, M. Buret, Alain Dereux, Aymeric Leray, and Thibault Brulé

Subjects
Computer science, 02 engineering and technology, Biosensing Techniques, computer.software_genre, Spectrum Analysis, Raman, 01 natural sciences, Spectral line, Article, symbols.namesake, Cysteine, Spectroscopy, Representation (mathematics), Sine and cosine transforms, Multidisciplinary, 010401 analytical chemistry, Sorting, Models, Theoretical, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Fourier transform, Principal component analysis, Odorants, symbols, Polar, Data mining, 0210 nano-technology, Raman spectroscopy, Biological system, computer, Monte Carlo Method, Raman scattering, Algorithms
Abstract

Surface enhanced Raman scattering (SERS) spectroscopy becomes increasingly used in biosensors for its capacity to detect and identify single molecules. In practice, a large number of SERS spectra are acquired and reliable ranking methods are thus essential for analysing all these data. Supervised classification strategies, which are the most effective methods, are usually applied but they require pre-determined models or classes. In this work, we propose to sort SERS spectra in unknown groups with an alternative strategy called Fourier polar representation. This non-fitting method based on simple Fourier sine and cosine transforms produces a fast and graphical representation for sorting SERS spectra with quantitative information. The reliability of this method was first investigated theoretically and numerically. Then, its performances were tested on two concrete biological examples: first with single amino-acid molecule (cysteine) and then with a mixture of three distinct odorous molecules. The benefits of this Fourier polar representation were highlighted and compared to the well-established statistical principal component analysis method.

Published
2016
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26. Reversible Strong Coupling in Silver Nanoparticle Arrays Using Photochromic Molecules

Author

Alexandre Bouhelier, Alessandro Veltri, Renaud Bachelot, Pierre-Michel Adam, Anne-Laure Baudrion, Antoine Perron, Laboratoire de Nanotechnologie et d'Instrumentation Optique (LNIO), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS), Università della Calabria [Arcavacata di Rende] (Unical), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), and Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
exciton−plasmon coupling, Plasmon, Bioengineering, 02 engineering and technology, 010402 general chemistry, Photochemistry, 01 natural sciences, Silver nanoparticle, Photochromism, chemistry.chemical_compound, active plasmonics, General Materials Science, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Surface plasmon resonance, Rabi splitting, Spiropyran, Chemistry, Mechanical Engineering, Resonance, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, spiropyran, 0104 chemical sciences, Chemical physics, Excited state, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 0210 nano-technology, Localized surface plasmon
Abstract

International audience; In this Letter, we demonstrate a reversible strong coupling regime between a dipolar surface plasmon resonance and a molecular excited state. This reversible state is experimentally observed on silver nanoparticle arrays embedded in a polymer film containing photochromic molecules. Extinction measurements reveal a clear Rabi splitting of 294 meV, corresponding to ∼13% of the molecular transition energy. We derived an analytical model to confirm our observations, and we emphasize the importance of spectrally matching the polymer absorption with the plasmonic resonance to observe coupled states. Finally, the reversibility of this coupling is illustrated by cycling the photochromic molecules between their two isomeric forms.

Published
2012
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27. Influence of the Number of Nanoparticles on the Enhancement Properties of Surface-Enhanced Raman Scattering Active Area: Sensitivity versus Repeatability

Author

Georges Lévi, Jérémie Margueritat, Carmen Marco De Lucas, Eric Finot, Johan Grand, Hélène Gehan, Jean Aubard, Alexandre Bouhelier, Laurent Markey, Gérard Colas-des-Francs, Nordin Félidj, Alain Dereux, Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS (UMR_7086)), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), and Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Light, Macromolecular Substances, Surface Properties, Molecular Conformation, General Physics and Astronomy, Nanoparticle, Nanotechnology, 02 engineering and technology, Spectrum Analysis, Raman, 010402 general chemistry, 01 natural sciences, symbols.namesake, Materials Testing, Scattering, Radiation, General Materials Science, Sensitivity (control systems), Particle Size, Surface plasmon resonance, ComputingMilieux_MISCELLANEOUS, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], General Engineering, 021001 nanoscience & nanotechnology, Nanostructures, 0104 chemical sciences, Colloidal gold, symbols, Surface modification, Crystallization, 0210 nano-technology, Electron-beam lithography, Excitation, Raman scattering
Abstract

In the present work, the combination of chemical immobilization with electron beam lithography enables the production of sensitive and reproducible SERS-active areas composed of stochastic arrangements of gold nanoparticles. The number of nanoparticles was varied from 2 to 500. Thereby a systematic analysis of these SERS-active areas allows us to study SERS efficiency as a function of the number of nanoparticles. We found that the experimental parameters are critical, in particular the size of the SERS-active area must be comparable to the effective area of excitation to obtained reproducible SERS measurements. The sensitivity has also been studied by deducing the number of NPs that generate the enhancement. With this approach we demonstrates that the maximum enhancement, the best sensitivity, is obtained with the smallest number of nanoparticles that is resonant at a given excitation wavelength.

Published
2011
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28. Off-Resonant Optical Excitation of Gold Nanorods: Nanoscale Imprint of Polarization Surface Charge Distribution

Author

Xuan Zhou, Claire Deeb, Prashant K. Jain, Renaud Bachelot, Alexandre Bouhelier, Olivier Soppera, Davy Gérard, Pascal Royer, Jérôme Plain, Laboratoire de Nanotechnologie et d'Instrumentation Optique (LNIO), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), University of California, Photomatériaux pour l'Optique et les Nanotechnologies (PHOTON LRC 7228), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA)), Laboratoire de Nanotechnologie et d'Instrumentation Optique ( LNIO ), Institut Charles Delaunay ( ICD ), Université de Technologie de Troyes ( UTT ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Technologie de Troyes ( UTT ) -Centre National de la Recherche Scientifique ( CNRS ), Department of Crop and Soil Sciences, PennState University [Pennsylvania] ( PSU ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Photomatériaux pour l'Optique et les Nanotechnologies ( PHOTON LRC 7228 ), Université de Haute-Alsace (UHA) Mulhouse - Colmar ( Université de Haute-Alsace (UHA) ), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), University of California (UC), Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, surface charge density, Analytical chemistry, Physics::Optics, 02 engineering and technology, Dielectric, 010402 general chemistry, 01 natural sciences, plasmonics, polymer cross-linking, Electric field, optical properties of metal nanoparticles, General Materials Science, Surface charge, Physical and Theoretical Chemistry, Polarization (electrochemistry), ComputingMilieux_MISCELLANEOUS, Plasmon, business.industry, Charge density, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, [ CHIM.POLY ] Chemical Sciences/Polymers, [CHIM.POLY]Chemical Sciences/Polymers, [ CHIM.MATE ] Chemical Sciences/Material chemistry, polymerization, Optoelectronics, Nanorod, nanorods, 0210 nano-technology, business, Excitation
Abstract

International audience; We report on the nanoscale optical characterization of gold nanorods irradiated out of their plasmonic resonance. Our approach is based on the reticulation of a photopolymerizable formulation locally triggered by enhanced electromagnetic fields. The tiny local field enhancement stems from the surface polarization charges associated with the electric field discontinuity at the metal/dielectric interface. This allows us to get a nanoscale signature of the spatial distribution of the surface charge density in metallic nanoparticles irradiated off-resonance.

Published
2010
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29. Enhanced and polarized emission from single colloidal CdSe/CdS nanocrystals coupled to a one-dimensional gold grating

Author

Xavier Quélin, Alexandre Bouhelier, Arunandan Kumar, Benoit Dubertret, Michel Nasilowski, Jean-Pierre Hermier, J.-C. Weeber, G. Colas des Francs, F. Eloi, F Mazéas, Hugo Frederich, Stéphanie Buil, Groupe d'Etude de la Matière Condensée ( GEMAC ), Université de Versailles Saint-Quentin-en-Yvelines ( UVSQ ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique et d'Etude des Matériaux ( LPEM ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -ESPCI ParisTech-Centre National de la Recherche Scientifique ( CNRS ), Institut Universitaire de France ( IUF ), Ministère de l'Éducation nationale, de l’Enseignement supérieur et de la Recherche ( M.E.N.E.S.R. ), Groupe d'Etude de la Matière Condensée (GEMAC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) (LPEM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), and Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)

Subjects
Photoluminescence, Materials science, business.industry, Physics::Optics, 02 engineering and technology, [ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], Grating, 021001 nanoscience & nanotechnology, Polarization (waves), Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 01 natural sciences, Fluorescence, Colloid, Condensed Matter::Materials Science, Nanocrystal, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], 0103 physical sciences, Optoelectronics, 010306 general physics, 0210 nano-technology, business
Abstract

International audience; We present in detail the fluorescence properties of single thick-shell CdSe/CdS colloidal nanocrystals coupled to a linear one-dimensional gold grating. In addition to the photoluminescence decay rate increase, we point out that the polarization ratio of the emission is dramatically enhanced. It overcomes 80% and can reach values close to unity. Experimental results are successfully compared to theoretical predictions. Blinking suppression is also reported.

Published
2016
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30. Remote plasmon-induced heat transfer probed by the electronic transport of a gold nanowire

Author

Marie-Maxime Mennemanteuil, Philippe Ben-Abdallah, Mondher Besbes, Gérard Colas-des-Francs, Nicolas Cazier, Alexandre Bouhelier, M. Buret, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry / Naphel, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Charles Fabry ( LCF ), and Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Materials science, Nanowire, Nanoparticle, FOS: Physical sciences, Physics::Optics, Nanotechnology, 02 engineering and technology, 01 natural sciences, Molecular physics, law.invention, law, 0103 physical sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 010306 general physics, Absorption (electromagnetic radiation), Electrical conductor, Plasmon, ComputingMilieux_MISCELLANEOUS, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], Condensed Matter - Mesoscale and Nanoscale Physics, 021001 nanoscience & nanotechnology, Laser, Heat transfer, 0210 nano-technology, Excitation, Optics (physics.optics), Physics - Optics
Abstract

We show in this paper that the heat generated by the optical excitation of resonant plasmonic antennas and diffusing along a simple glass/air interface disturbs the electron transport of a nearby conductive element. By probing the temperature-dependent resistance of a gold nanowire $R_{\rm nw}(T)$, we quantitatively analyze the impact of a resonant absorption of the laser by the antennas. We find that the temperature rise at the nanowire induced by the laser absorption of a distant nanoparticle may exceed that of a direct illumination of the nanowire itself. We also find that a global temperature calibration underestimates the heat generated locally by the laser. The temperature deduced from resistance variations are verified by numerical simulations with a very satisfactory agreement., 9 figures

Published
2016
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31. Dynamics, effciency and energy distribution of nonlinear plasmon-assisted generation of hot carriers

Author

Sviatlana Viarbitskaya, Frédérique de Fornel, Alexandre Bouhelier, Olivier Demichel, Marlène Petit, Régis Méjard, Edouard Hertz, Benoit Cluzel, and Franck Billard

Subjects
Work (thermodynamics), Materials science, Physics::Optics, FOS: Physical sciences, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Electrical and Electronic Engineering, Plasmon, Range (particle radiation), business.industry, Autocorrelation, Surface plasmon, Relaxation (NMR), 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Nonlinear system, Optoelectronics, 0210 nano-technology, business, Excitation, Biotechnology, Physics - Optics, Optics (physics.optics)
Abstract

We employ nonlinear autocorrelation measurements to investigate plasmon-assisted hot carrier dynamics generated in optical gold antennas. We demonstrate that surface plasmons enable a nonlinear formation of hot carriers, providing thus a unique lever to optimize the energy distribution and generation efficiency of the photo-excited charges. The temporal response of the carriers' relaxation can be controlled within a range extending from 500~fs to 2.5~ps. By conducting a quantitative analysis of the dynamics, we determine the nonlinear absorption cross-section of individual optical antennas. As such, this work provides strong insights on the understanding of plasmon-induced hot carrier generation, especially in the view of applications where the time response plays a preponderant role.

Published
2016
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32. Delocalization of Nonlinear Optical Responses in Plasmonic Nanoantennas

Author

Olivier Demichel, Alexandre Bouhelier, Sviatlana Viarbitskaya, Gérard Colas des Francs, and Benoit Cluzel

Subjects
Physics, business.industry, Surface plasmon, FOS: Physical sciences, Physics::Optics, General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Nonlinear system, Delocalized electron, Optics, 0103 physical sciences, Femtosecond, Optoelectronics, 010306 general physics, 0210 nano-technology, business, Luminescence, Plasmon, Excitation, Physics - Optics, Optics (physics.optics), Coherence (physics)
Abstract

Remote excitation and emission of two-photon luminescence and second-harmonic generation are observed in micrometer long gold rod optical antennas upon local illumination with a tightly focused near-infrared femtosecond laser beam. We show that the nonlinear radiations can be emitted from the entire antenna and the measured far-field angular patterns bear the information regarding the nature and origins of the respective nonlinear processes. We demonstrate that the nonlinear responses are transported by the propagating surface plasmon at excitation frequency, enabling thereby polariton-mediated tailoring and design of nonlinear responses., Comment: 6 pages, 4 figures

Published
2015
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33. Electromagnetic Interactions in Plasmonic Nanoparticle Arrays

Author

Renaud Bachelot, Gilles Lerondel, Gary P. Wiederrecht, Alexandre Bouhelier, Pascal Royer, Sergei Kostcheev, Jin Seo Im, Argonne National Laboratory [Lemont] (ANL), Laboratoire de Nanotechnologie et d'Instrumentation Optique (LNIO), Institut Charles Delaunay (ICD), and Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Chemistry, Surface plasmon, Analytical chemistry, Nanoparticle, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, 0104 chemical sciences, Surfaces, Coatings and Films, Planar, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Materials Chemistry, Particle size, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Physical and Theoretical Chemistry, Surface plasmon resonance, 0210 nano-technology, Spectroscopy, Plasmon, Localized surface plasmon
Abstract

International audience; Single two-dimensional planar silver arrays and one-dimensional linear gold chains of nanoparticles were investigated by dark-field surface plasmon spectroscopy and studied as a function of interparticle distance, particle size, and number of particles. In agreement with recent theoretical predictions, a red shift of the surface plasmon resonance occurring in two-dimensional arrays was found for lattice spacings below 200 nm. This red shift is associated with a significant broadening of the resonance and is attributed to the onset of near-field interactions. We found that the relative contributions of the long-range and short-range interactions in two-dimensional arrays of particles are fundamentally different to those occurring in individual linear chains.

Published
2005
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34. Spontaneous hot-electron light emission from electron-fed optical antennas

Author

Alexandre Bouhelier, Alexander V. Uskov, Johann Berthelot, Mickaël Buret, Gérard Colas-des-Francs, Igor E. Protsenko, Nicolas Cazier, Jean Dellinger, Igor V. Smetanin, and Marie-Maxime Mennemanteuil

Subjects
Materials science, FOS: Physical sciences, Bioengineering, 02 engineering and technology, Electron, 01 natural sciences, Optics, Tunnel junction, 0103 physical sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), General Materials Science, Spontaneous emission, Electronics, 010306 general physics, Computer Science::Information Theory, Signal processing, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Mechanical Engineering, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Optoelectronics, Light emission, Photonics, 0210 nano-technology, business, Physics - Optics, Data transmission, Optics (physics.optics)
Abstract

Nanoscale electronics and photonics are among the most promising research areas providing functional nano-components for data transfer and signal processing. By adopting metal-based optical antennas as a disruptive technological vehicle, we demonstrate that these two device-generating technologies can be interfaced to create an electronically-driven self-emitting unit. This nanoscale plasmonic transmitter operates by injecting electrons in a contacted tunneling antenna feedgap. Under certain operating conditions, we show that the antenna enters a highly nonlinear regime in which the energy of the emitted photons exceeds the quantum limit imposed by the applied bias. We propose a model based upon the spontaneous emission of hot electrons that correctly reproduces the experimental findings. The electron-fed optical antennas described here are critical devices for interfacing electrons and photons, enabling thus the development of optical transceivers for on-chip wireless broadcasting of information at the nanoscale.

Published
2015
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35. Momentum angular mapping of enhanced Raman scattering of single-walled carbon nanotube

Author

Padmnabh Rai, Eric Finot, Alexandre Bouhelier, Tapender Singh, and Thibault Brulé

Subjects
Angular momentum, Materials science, Physics and Astronomy (miscellaneous), business.industry, Surface plasmon, 02 engineering and technology, Carbon nanotube, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, Nanomaterials, law.invention, Momentum, Condensed Matter::Materials Science, symbols.namesake, Optics, law, 0103 physical sciences, symbols, 010306 general physics, 0210 nano-technology, business, Raman spectroscopy, Spectroscopy, Raman scattering
Abstract

We perform momentum mapping of the Raman scattering of individual single-walled carbon nanotubes (SWNTs) or thin ropes of SWNTs enhanced by surface plasmons sustained by either a linear chain of nanoantennas or flower-shaped nanoparticles. The momentum spectroscopy of Raman scattering of the carbon nanotube (CNT) demonstrates the direct verification of momentum selection rules and identifies the characteristic bands of the molecules or the nanomaterials under scrutiny. The characteristic vibrational signatures of the D, G−, and G bands provide an isotropic response in k-space irrespective of the arrangement of the enhancing platform. However, other dispersive or double resonance bands, such as D−, D+, D′, M, and iTOLA bands appear as a dipolar emission oriented towards the long axis of the CNT regardless of the CNT orientation but strongly depend on the patterning of enhancement of the electromagnetic field.

Published
2017
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36. Nonlinear photon-assisted tunneling transport in optical gap antennas

Author

Alexandre Bouhelier, Laurent Markey, Arnaud Stolz, Johann Berthelot, Vincent Meunier, Gérard Colas des Francs, Marie-Maxime Mennemanteuil, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Rensselaer Polytechnic Institute ( RPI ), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), and Rensselaer Polytechnic Institute (RPI)

Subjects
Photon, Materials science, Physics::Optics, Bioengineering, 02 engineering and technology, Electron, 01 natural sciences, electromigration, 0103 physical sciences, General Materials Science, 010306 general physics, optical rectennas, Quantum tunnelling, Plasmon, Common emitter, photon-assisted tunneling, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Mechanical Engineering, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Transducer, Optoelectronics, Plasmonics, Optical radiation, Antenna (radio), 0210 nano-technology, business
Abstract

International audience; We introduce strongly coupled optical gap antennas to interface optical radiation with current-carrying electrons at the nanoscale. The transducer relies on the nonlinear optical and electrical properties of an optical gap antenna operating in the tunneling regime. We discuss the underlying physical mechanisms controlling the conversion involving d-band electrons and demonstrate that a simple two-wire optical antenna can provide advanced optoelectronic functionalities beyond tailoring the electromagnetic response of a single emitter. Interfacing an electronic command layer with a nanoscale optical device may thus be facilitated by the optical rectennas discussed here.

Published
2014
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37. Single-molecule controlled emission in planar plasmonic cavities

Author

Alexandre Bouhelier, J.-C. Weeber, Aymeric Leray, Jean-Pierre Hermier, Stéphanie Buil, Ashish Kumar, Xavier Quélin, G. Colas des Francs, S. Derom, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] ( IRI ), Université de Lille, Sciences et Technologies-Université de Lille, Droit et Santé-Centre National de la Recherche Scientifique ( CNRS ), Groupe d'Etude de la Matière Condensée ( GEMAC ), Université de Versailles Saint-Quentin-en-Yvelines ( UVSQ ) -Centre National de la Recherche Scientifique ( CNRS ), Institut Universitaire de France ( IUF ), Ministère de l'Éducation nationale, de l’Enseignement supérieur et de la Recherche ( M.E.N.E.S.R. ), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] (IRI), Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Droit et Santé-Université de Lille, Sciences et Technologies, Groupe d'Etude de la Matière Condensée (GEMAC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), and Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)

Subjects
Coupling, Materials science, business.industry, Surface plasmon, Cavity quantum electrodynamics, technology, industry, and agriculture, Physics::Optics, 02 engineering and technology, [ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], Radiation, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Fluorescence, Electronic, Optical and Magnetic Materials, Planar, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], 0103 physical sciences, Radiative transfer, Optoelectronics, 010306 general physics, 0210 nano-technology, business, Plasmon
Abstract

International audience; We study the fluorescence emission from single dye molecules in coplanar plasmonic cavities composed of a thin gold film surrounded by two in-plane surface plasmon Bragg mirrors. We first discuss the effect of the presence of Bragg mirrors on the radiation diagram of surface plasmon coupled emission. Then, we investigate the role of the planar cavity size by single-molecule fluorescence lifetime imaging. Experimental data are compared to numerical simulations of the decay rates calculated as a function of the molecule orientation and position within the cavity. The creation of new decay channels by coupling to the cavity modes is also discussed. We measure a plasmonic Purcell factor up to five, attributed to the enhancement of the radiative rate.

Published
2014
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38. Coupling of a dipolar emitter into one-dimensional surface plasmon

Author

Alain Dereux, Alexandre Bouhelier, Gérard Colas des Francs, and Julien Barthes

Subjects
Physics, Quantum optics, Multidisciplinary, business.industry, Surface plasmon, Nanowire, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Bioinformatics, 01 natural sciences, Surface plasmon polariton, Article, 0103 physical sciences, Polariton, Optoelectronics, 010306 general physics, 0210 nano-technology, business, Quantum, Plasmon, Common emitter
Abstract

Quantum plasmonics relies on a new paradigm for light-matter interaction. It benefits from strong confinement of surface plasmon polaritons (SPP) that ensures efficient coupling at a deep subwavelength scale, instead of working with a long lifetime cavity polariton that increases the duration of interaction. The large bandwidth and the strong confinement of one dimensional SPP enable controlled manipulation of a nearby quantum emitter. This paves the way to ultrafast nanooptical devices. However, the large SPP bandwidth originates from strong losses so that a clear understanding of the coupling process is needed. In this report, we investigate in details the coupling between a single emitter and a plasmonic nanowire, but also SPP mediated coupling between two emitters. We notably clarify the role of losses in the Purcell factor, unavoidable to achieve nanoscale confinement down to 10(-4)(λ/n)(3). Both the retarded and band-edge quasi-static regimes are discussed.

Published
2013

39. Evaluating plasmonic transport in current-carrying silver nanowires

Author

Laurent Markey, Arnaud Stolz, Erik Dujardin, Mingxia Song, Alexandre Bouhelier, Douguo Zhang, Juan Arocas, Gérard Colas des Francs, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), University of Science and Technology of China [Hefei] (USTC), Groupe NanoSciences (CEMES-GNS), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] ( LICB ), Université de Technologie de Belfort-Montbeliard ( UTBM ) -Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), University of Science and Technology of China [Hefei] ( USTC ), Groupe NanoSciences ( CEMES-GNS ), Centre d'élaboration de matériaux et d'études structurales ( CEMES ), Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Optics and Photonics, Silver, Materials science, General Chemical Engineering, Nanowire, Metal Nanoparticles, 02 engineering and technology, 010402 general chemistry, [ CHIM ] Chemical Sciences, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, [CHIM]Chemical Sciences, Surface plasmon resonance, Plasmon, General Immunology and Microbiology, Nanowires, business.industry, Physics, General Neuroscience, Surface plasmon, Electric Conductivity, Plasmonic Circuitry, Surface Plasmon Resonance, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Nanolithography, Resist, Optoelectronics, 0210 nano-technology, business, Localized surface plasmon
Abstract

cited By 1; International audience; Plasmonics is an emerging technology capable of simultaneously transporting a plasmonic signal and an electronic signal on the same information support1,2,3. In this context, metal nanowires are especially desirable for realizing dense routing networks4. A prerequisite to operate such shared nanowire-based platform relies on our ability to electrically contact individual metal nanowires and efficiently excite surface plasmon polaritons5 in this information support. In this article, we describe a protocol to bring electrical terminals to chemically-synthesized silver nanowires6 randomly distributed on a glass substrate7. The positions of the nanowire ends with respect to predefined landmarks are precisely located using standard optical transmission microscopy before encapsulation in an electron-sensitive resist. Trenches representing the electrode layout are subsequently designed by electron-beam lithography. Metal electrodes are then fabricated by thermally evaporating a Cr/Au layer followed by a chemical lift-off. The contacted silver nanowires are finally transferred to a leakage radiation microscope for surface plasmon excitation and characterization8,9. Surface plasmons are launched in the nanowires by focusing a near infrared laser beam on a diffraction-limited spot overlapping one nanowire extremity5,9. For sufficiently large nanowires, the surface plasmon mode leaks into the glass substrate9,10. This leakage radiation is readily detected, imaged, and analyzed in the different conjugate planes in leakage radiation microscopy9,11. The electrical terminals do not affect the plasmon propagation. However, a current-induced morphological deterioration of the nanowire drastically degrades the flow of surface plasmons. The combination of surface plasmon leakage radiation microscopy with a simultaneous analysis of the nanowire electrical transport characteristics reveals the intrinsic limitations of such plasmonic circuitry.

Published
2013
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40. Electron-induced limitation of surface plasmon propagation in silver nanowires

Author

Johann Berthelot, Qi Fu, Alexandre Bouhelier, Mingxia Song, Douguo Zhang, G. Colas des Francs, A. Thete, Erik Dujardin, Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] ( LICB ), Université de Technologie de Belfort-Montbeliard ( UTBM ) -Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Groupe NanoSciences ( CEMES-GNS ), Centre d'élaboration de matériaux et d'études structurales ( CEMES ), Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), University of Science and Technology of China [Hefei] ( USTC ), Laboratoire Interdisciplinaire Carnot de Bourgogne [Dijon] (LICB), Université de Bourgogne (UB)-Université de Technologie de Belfort-Montbeliard (UTBM)-Centre National de la Recherche Scientifique (CNRS), Groupe NanoSciences (CEMES-GNS), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), University of Science and Technology of China [Hefei] (USTC), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Nanostructure, FOS: Physical sciences, Physics::Optics, Bioengineering, 02 engineering and technology, Electron, 01 natural sciences, [ CHIM ] Chemical Sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 0103 physical sciences, Physics::Atomic and Molecular Clusters, [CHIM]Chemical Sciences, General Materials Science, Electrical and Electronic Engineering, 010306 general physics, Nanoscopic scale, Plasmon, Electronic circuit, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Mechanical Engineering, Surface plasmon, Plasmonic Circuitry, General Chemistry, 021001 nanoscience & nanotechnology, Mechanics of Materials, Optoelectronics, Electric current, 0210 nano-technology, business, Optics (physics.optics), Physics - Optics
Abstract

Plasmonic circuitry is considered as a promising solution-effective technology for miniaturizing and integrating the next generation of optical nano-devices. A key element is the shared metal network between electrical and optical information enabling an efficient hetero-integration of an electronic control layer and a plasmonic data link. Here, we investigate to what extend surface plasmons and current-carrying electrons interfere in such a shared circuitry. By synchronously recording surface plasmon propagation and electrical output characteristics of single chemically-synthesized silver nanowires we determine the limiting factors hindering the co-propagation of electrical current and surface plasmons in these nanoscale circuits., 6 Figures

Published
2013
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41. Momentum-space spectroscopy for advanced analysis of dielectric-loaded surface plasmon polariton coupled and bent waveguides

Author

J.-C. Weeber, Alexandre Bouhelier, Karim Hassan, R. Espiau de Lamaestre, T. Bernardin, Gérard Colas-des-Francs, and Alain Dereux

Subjects
Physics, business.industry, Physics::Optics, FOS: Physical sciences, Position and momentum space, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Curvature, 01 natural sciences, Surface plasmon polariton, Electronic, Optical and Magnetic Materials, 010309 optics, Momentum, Optics, 0103 physical sciences, Quasiparticle, 0210 nano-technology, business, Spectroscopy, Plasmon, Physics - Optics, Optics (physics.optics)
Abstract

We perform advanced radiation leakage microscopy of routing dielectric-loaded plasmonic waveguiding structures. By direct plane imaging and momentum-space spectroscopy, we analyze the energy transfer between coupled waveguides as a function of gap distance and reveal the momentum distribution of curved geometries. Specifically, we observed a clear degeneracy lift of the effective indices for strongly interacting waveguides in agreement with coupled-mode theory. We use momentum-space representations to discuss the effect of curvature on dielectric-loaded waveguides. The experimental images are successfully reproduced by a numerical and an analytical model of the mode propagating in a curved plasmonic waveguide., Comment: 9 pages, 10 figures

Published
2013
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42. Electrical excitation of waveguided surface plasmons by a light-emitting tunneling optical gap antenna

Author

Laurent Markey, G. Colas des Francs, Alexandre Bouhelier, M. Buret, Nicolas Cazier, Juan Arocas, and Alexander V. Uskov

Subjects
Materials science, business.industry, Surface plasmon, Nanophotonics, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, 7. Clean energy, Surface plasmon polariton, Waveguide (optics), Atomic and Molecular Physics, and Optics, law.invention, Optics, law, 0103 physical sciences, Optoelectronics, Antenna (radio), Photonics, Scanning tunneling microscope, 010306 general physics, 0210 nano-technology, business, Plasmon
Abstract

We introduce a new type of electroplasmonic interfacing component to electrically generate surface plasmons. Specifically, an electron-fed optical tunneling gap antenna is integrated on a plasmonic waveguiding platform. When electrical charges are injected in the tunneling barrier of the gap antenna, a broad-band radiation is emitted from the feed area by a process identified as a thermal emission of hot electrons. Part of the emitted photons couples to surface plasmon modes sustained by the waveguide geometry. The transducing optical antenna is thus acting as a localized electrical source of surface plasmon polaritons. The integration of electrically-activated optical antennas into a plasmonic architecture mitigates the need for complex coupling scheme and proposes a solution for realizing nanoscale units at the interface between nano-electronics and photonics.

Published
2016
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43. Plasmonics: From Basics to Advanced Topics

Author

Rainer Hillenbrand, Gérard Colas des Francs, Alexandre Bouhelier, Gilles Lerondel, Javier Aizpurua, Philippe Lalanne, Jérôme Plain, Romain Quidant, Jonathan Grandidier, Serguei Kochtcheev, Jean-Jacques Greffet, Daniel Maystre, R.C. Mc Phedran, lp2n-03,lp2n-13, Laboratoire Photonique, Numérique et Nanosciences ( LP2N ), Université Sciences et Technologies - Bordeaux 1-Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Sciences et Technologies - Bordeaux 1-Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Charles Fabry / Naphel, Laboratoire Charles Fabry ( LCF ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ), Spanish National Research Council ( CSIC ), CIC nanoGUNE Consolider, Donostia International Physcis Center, Centre for ultrahigh bandwidth devices for optical systems ( CUDOS ), Australian National University ( ANU ), Institut de Ciencies Fotoniques [Castelldefels] ( ICFO ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Nanotechnologie et d'Instrumentation Optique ( LNIO ), Institut Charles Delaunay ( ICD ), Université de Technologie de Troyes ( UTT ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Technologie de Troyes ( UTT ) -Centre National de la Recherche Scientifique ( CNRS ), Stefan Enoch, Nicolas Bonod, Claus E. Ascheron, Laboratoire Photonique, Numérique et Nanosciences (LP2N), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Spanish National Research Council (CSIC), Centre for ultrahigh bandwidth devices for optical systems (CUDOS), Australian National University (ANU), Institut de Ciencies Fotoniques [Castelldefels] (ICFO), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Nanotechnologie et d'Instrumentation Optique (LNIO), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), and Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB)

Subjects
Materials science, surface plasmon theory, Other Fields of Physics, Physics::Optics, Nanotechnology, 02 engineering and technology, 021001 nanoscience & nanotechnology, 7. Clean energy, 01 natural sciences, plasmonics, Wood's anomalies, photonic devices, nanophotonics and nano-optics, plasmonic nanostructures, plasmonics and optical devices, field enhanced spectroscopy and microscopy, 0103 physical sciences, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, 010306 general physics, 0210 nano-technology, Plasmonic nanostructures, Plasmon, ComputingMilieux_MISCELLANEOUS, localized plasmons
Abstract

This book deals with all aspects of plasmonics, basics, applications and advanced developments. Plasmonics is an emerging field of research dedicated to the resonant interaction of light with metals. The light/matter interaction is strongly enhanced at a nanometer scale which sparks a keen interest of a wide scientific community and offers promising applications in pharmacology, solar energy, nanocircuitry or also light sources. The major breakthroughs of this field of research originate from the recent advances in nanotechnology, imaging and numerical modelling. The book is divided into three main parts: extended surface plasmons polaritons propagating on metallic surfaces, surface plasmons localized on metallic particles, imaging and nanofabrication techniques. The reader will find in the book: Principles and recent advances of plasmonics, a complete description of the physics of surface plasmons, a historical survey with emphasize on the emblematic topic of Wood's anomaly, an overview of modern applications of molecular plasmonics and an extensive description of imaging and fabrications techniques.

Published
2012
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44. Silencing and enhancement of second-harmonic generation in optical gap antennas

Author

Mingxia Song, Alain Dereux, Padmnabh Rai, Johann Berthelot, Gérard Colas des Francs, Alexandre Bouhelier, Guillaume Bachelier, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Nano-Optique et Forces (NOF), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), CP, Laboratoire de Spectrométrie Ionique et Moléculaire (LASIM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Regional Council of Burgundy - PARI Nanophotonique Nanofabrication, European Project, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Spectrométrie Ionique et Moléculaire ( LASIM ), École normale supérieure - Lyon ( ENS Lyon ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Lyon ( ENS Lyon ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ), NOF - Nano-Optique et Forces, Institut Néel ( NEEL ), Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes [Saint Martin d'Hères]-Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes [Saint Martin d'Hères], Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Nano-Optique et Forces (NEEL - NOF), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)

Subjects
Electromagnetic field, Optics and Photonics, Surface Properties, Metal Nanoparticles, Electrons, 02 engineering and technology, 01 natural sciences, Signal, Optics, Electromagnetic Fields, 0103 physical sciences, Materials Testing, Nanotechnology, Scattering, Radiation, Computer Simulation, Surface plasmon resonance, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 010306 general physics, Local field, Plasmon, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Electromagnetic Radiation, Second-harmonic generation, Equipment Design, Models, Theoretical, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Finite element method, Nonlinear system, Microscopy, Electron, Scanning, Optoelectronics, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Gold, 0210 nano-technology, business
Abstract

International audience; Amplifying local electromagnetic fields by engineering optical interactions between individual constituents of an optical antenna is considered fundamental for efficient nonlinear wavelength conversion in nanometer-scale devices. In contrast to this general statement we show that high field enhancement does not necessarily lead to an optimized nonlinear activity. In particular, we demonstrate that second-harmonic responses generated at strongly interacting optical gap antennas can be significantly suppressed. Numerical simulations are confirming silencing of second-harmonic in these coupled systems despite the existence of local field amplification. We then propose a simple approach to restore and amplify the second-harmonic signal by changing the manner in which electrically-connected optical antennas are interacting in the charge-transfer plasmon regime. Our observations provide critical design rules for realizing optimal structures that are essential for a broad variety of nonlinear surface-enhanced characterizations and for realizing the next generation of electrically-driven optical antennas.

Published
2012
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45. Determinant role of the edges in defining surface plasmon propagation in stripe waveguides and tapered concentrators

Author

Alexandre Bouhelier, Maria Allegrini, Francesco Tantussi, Gérard Colas des Francs, Johann Berthelot, Padmnabh Rai, Jean-Claude Weeber, Alain Dereux, Francesco Fuso, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Università di Pisa, and CNISM unità di Pisa, ANR-09-BLAN-0049-01,ANR-09-BLAN-0049-01,PlasTips ( 2009 ), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), and ANR-09-BLAN-0049,PlasTips(2009)

Subjects
Diffraction, Total internal reflection, Materials science, business.industry, Surface plasmon, Nanophotonics, Physics::Optics, Statistical and Nonlinear Physics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Surface plasmon polariton, Atomic and Molecular Physics, and Optics, law.invention, Optics, law, 0103 physical sciences, Near-field scanning optical microscope, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 010306 general physics, 0210 nano-technology, business, Waveguide, Localized surface plasmon
Abstract

International audience; In this paper, we experimentally show the effect of waveguide discontinuity on the propagation of the surface plasmon in metal stripes and tapered terminations. Dual-plane leakage microscopy and near-field microscopy were performed on Au stripes with varied widths to imag29e the surface plasmon intensity distribution in real and reciprocal spaces. We unambiguously demonstrate that edge diffraction is the limiting process determining the cutoff conditions of the surface plasmon mode. Finally, we determine the optimal tapered geometry leading to the highest transmission.

Published
2012
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46. Mie plasmons: modes volumes, quality factors and coupling strengths (Purcell factor) to a dipolar emitter

Author

Alexandre Bouhelier, G. Colas des Francs, S. Derom, Alain Dereux, R. Vincent, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), and Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Article Subject, [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, Quality (physics), Quasistatic approximation, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], 0103 physical sciences, lcsh:QC350-467, 010306 general physics, Plasmon, Common emitter, Physics, Coupling, Quantum Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], Condensed matter physics, Scattering, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Dipole, Quantum Physics (quant-ph), 0210 nano-technology, lcsh:Optics. Light, Optics (physics.optics), Physics - Optics, Localized surface plasmon
Abstract

Using either quasi-static approximation or exact Mie expansion, we characterize the localized surface plasmons supported by a metallic spherical nanoparticle. We estimate the quality factor $Q_n$ and define the effective volume $V_n$ of the $n^{th}$ mode in a such a way that coupling strength with a neighbouring dipolar emitter is proportional to the ratio $Q_n/V_n$ (Purcell factor). The role of Joule losses, far-field scattering and mode confinement in the coupling mechanism are introduced and discussed with simple physical understanding, with particular attention paid to energy conservation., (in press) International Journal of Optics (2011)

Published
2012
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47. Discerning the Origins of the Amplitude Fluctuations in Dynamic Raman Nanospectroscopy

Author

Johan Grand, Jérémie Margueritat, Alain Dereux, Stéphanie Lau-Truong, Alexandre Bouhelier, Jean Aubard, Gérard Colas des Francs, Laurent Markey, Eric Finot, Georges Lévi, Nordin Félidj, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS (UMR_7086)), Université Paris Diderot - Paris 7 (UPD7)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Interfaces, Traitements, Organisation et Dynamique des Systèmes ( ITODYS UMR7086 ), and Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nanostructure, SURFACE, ELECTRODES, BENZENETHIOL, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Molecular physics, Spectral line, RESONANCE FLUORESCENCE, symbols.namesake, Optics, Rare events, BLINKING, Wavenumber, SCATTERING, Physical and Theoretical Chemistry, SPECTROSCOPY, Chemistry, business.industry, SERS, Observable, 021001 nanoscience & nanotechnology, STATISTICS, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, General Energy, Amplitude, symbols, ADATOMS, 0210 nano-technology, Raman spectroscopy, business, Raman scattering
Abstract

International audience; We introduce a novel experimental and analytical method for discerning rare surface-enhanced Raman scattering (SERS) events observable at the nanoscale. We show that the kinetics of the Raman activity recorded on an isolated nanostructure is punctuated by intense and rare events of large amplitude and spectral variations. The fluctuations of thousands of SERS spectra were analyzed statistically in terms of power density functions, and the occurrence of the rare events was quantified by a wavenumber statistics. Our analysis enables one to extract valuable and unique spectroscopic signature of Raman variations usually hidden in time-average or space-average measurements. We illustrate our approach using molecular surface dynamics of gold adatoms on nanoparticles.

Published
2012
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48. In-plane remote photoluminescence excitation of carbon nanotube by propagating surface plasmon

Author

Johann Berthelot, Alexandre Bouhelier, Padmnabh Rai, Achim Hartschuh, Nicolai F. Hartmann, Gérard Colas-des-Francs, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), and Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)

Subjects
POLARITONS, Materials science, Photoluminescence, Nanophotonics, Physics::Optics, 02 engineering and technology, Carbon nanotube, 01 natural sciences, law.invention, Condensed Matter::Materials Science, Optics, law, 0103 physical sciences, Photoluminescence excitation, 010306 general physics, Plasmon, business.industry, Condensed Matter::Other, Surface plasmon, 021001 nanoscience & nanotechnology, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Surface plasmon polariton, Atomic and Molecular Physics, and Optics, 0210 nano-technology, business, Localized surface plasmon
Abstract

International audience; In this work, we demonstrate propagating surface plasmon polariton (SPP) coupled photoluminescence (PL) excitation of single-walled carbon nanotube (SWNT). SPPs were launched at a few micrometers from individually marked SWNT, and plasmon-coupled PL was recorded to determine the efficiency of this remote in-plane addressing scheme. The efficiency depends upon the following factors: (i) longitudinal and transverse distances between the SPP launching site and the location of the SWNT and (ii) orientation of the SWNT with respect to the plasmon propagation wave vector (k(SPP)). Our experiment explores the possible integration of carbon nanotubes as a plasmon sensor in plasmonic and nanophotonic devices.

Published
2012
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49. A coupled lossy local-mode theory description of a plasmonic tip

Author

G. Colas des Francs, Alain Dereux, Julien Barthes, Alexandre Bouhelier, Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), and Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)

Subjects
POLARITONS, Optical fiber, General Physics and Astronomy, Physics::Optics, 02 engineering and technology, engineering.material, Lossy compression, 01 natural sciences, law.invention, 010309 optics, WAVE-GUIDES, Optics, Coating, law, 0103 physical sciences, EXCITATION, FIELD, Plasmon, Physics, COMPLEX, Mathematical model, business.industry, Energy conversion efficiency, 021001 nanoscience & nanotechnology, Surface plasmon polariton, LIGHT, engineering, Strong coupling, Optoelectronics, 0210 nano-technology, business
Abstract

International audience; We investigate power propagation in a metal-coated tapered optical fiber. We analyze in detail the conversion from the fiber core guided mode to a surface plasmon polariton (SPP) confined at the tip apex. To this aim, we adapt coupled local-mode theory to include lossy modes. Two distinct regimes are identified. In the case of thin metal coating, a strong coupling regime occurs between a core guided mode and a SPP with good conversion efficiency. In the case of thick metal coating, a very weak coupling occurs. Finally, energy confinement and the role of Joule losses are discussed in the near-infrared and visible ranges. Moreover, the coupled equations derived for local lossy modes are not limited to plasmonic systems but also apply to any absorbing or leaky optical waveguide of arbitrary shape, so this formalism could find applications in various areas.

Published
2012
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50. Launching propagating surface plasmon polaritons by a single carbon nanotube dipolar emitter

Author

Gérard Colas des Francs, Nicolai F. Hartmann, Alexandre Bouhelier, Giovanni Piredda, Johann Berthelot, Achim Hartschuh, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Department Chemie und Biochemie and CeNS, Ludwig-Maximilians-Universität München (LMU), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), and Ludwig-Maximilians-Universität München

Subjects
Nanotube, Materials science, Light, Physics::Optics, Bioengineering, 02 engineering and technology, Carbon nanotube, 7. Clean energy, 01 natural sciences, Molecular physics, law.invention, 010309 optics, Condensed Matter::Materials Science, law, 0103 physical sciences, Materials Testing, Scattering, Radiation, General Materials Science, Computer Simulation, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Particle Size, Plasmon, business.industry, Mechanical Engineering, Surface plasmon, General Chemistry, Surface Plasmon Resonance, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Polarization (waves), Surface plasmon polariton, Nanostructures, Optical properties of carbon nanotubes, Models, Chemical, Metals, Optoelectronics, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 0210 nano-technology, business, Excitation
Abstract

International audience; We report on the excitation of propagating surface plasmon polaritons in thin metal films by a single emitter. Upon excitation in the visible regime, individual semiconducting single-walled carbon nanotubes are shown to act as directional near-infrared point dipole sources launching propagating surface plasmons mainly along the direction of the nanotube axis. Plasmon excitation and propagation is monitored in Fourier and real space by leakage radiation microscopy and is modeled by rigorous theoretical calculations. Coupling to plasmons almost completely reshapes the emission of nanotubes both spatially and with respect to polarization as compared to photoluminescence on a dielectric substrate.

Published
2011
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