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6 results on '"Department of Applied Physics and Photonics [Brussels] ( TONA )"'

1. Two-mode nonlinear dynamics of quantum dot semiconductor laser

Author

Krassimir Panajotov, Lukasz Olejniczak, Marc Sciamanna, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Department of Applied Physics and Photonics [Brussels] (TONA), Vrije Universiteit Brussel (VUB), and Brussels Photonics Team

Subjects
Physics, business.industry, Elliptical polarization, Laser, 01 natural sciences, no keywords, Self-pulsation, Semiconductor laser theory, law.invention, 010309 optics, Quantum dot laser, Quantum dot, law, Excited state, 0103 physical sciences, Optoelectronics, Atomic physics, 010306 general physics, business, Lasing threshold
Abstract

International audience; We report on experimental and theoretical results showing how mode competition in quantum dot semiconductor lasers can result in new nonlinear dynamics. A first example is a competition between non-orthogonal elliptically polarized modes that manifests itself in a polarization switching at a given injection current and in a polarization mode hopping dynamics at different time-scales. A second example is a pulsating dynamics in a quantum dot laser with optical injection, which originates from the simultaneous lasing in the ground and excited modes.

Published
2011
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2. Synchronization of chaos in mutually coupled vertical-cavity surface-emitting lasers with time delay

Author

Atsushi Uchida, Hiroyuki Someya, Shigeru Yoshimori, Kazuya Tanaka, Krassimir Panajotov, Mitsutoshi Ozaki, Marc Sciamanna, Department of Information and Computer Sciences, Saitama University, Department of Applied Physics and Photonics [Brussels] (TONA), Vrije Universiteit Brussel (VUB), Institut of the Solid State Physics (ISSP), Bulgarian Academy of Sciences (BAS), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Medical Imaging, Radiology, and Applied Physics and Photonics

Subjects
Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Synchronization of chaos, Chaotic, Physics::Optics, 02 engineering and technology, Laser, Optical chaos, SEMICONDUCTOR-LASERS, 01 natural sciences, Synchronization, law.invention, Nonlinear Sciences::Chaotic Dynamics, CHAOS (operating system), Wavelength, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Waveform, 010306 general physics, business
Abstract

International audience; We experimentally observe in-phase and anti-phase synchronization of chaos in two mutually-coupled vertical-cavity surface-emitting lasers. We investigate leader-laggard relationship between two chaotic waveforms and find that the laser with longer wavelength becomes the leader.

Published
2009
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3. Polarization Synchronization Properties of Unidirectionally Coupled VCSELs

Author

Alexandre Locquet, Krassimir Panajotov, I. Gatare, Marc Sciamanna, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Department of Applied Physics and Photonics [Brussels] (TONA), Vrije Universiteit Brussel (VUB), Georgia Tech Lorraine [Metz], Ecole Nationale Supérieure des Arts et Metiers Metz-Georgia Institute of Technology [Atlanta]-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut of the Solid State Physics (ISSP), Bulgarian Academy of Sciences (BAS), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Georgia Institute of Technology [Atlanta]-CentraleSupélec-Ecole Nationale Supérieure des Arts et Metiers Metz-Centre National de la Recherche Scientifique (CNRS), and Applied Physics and Photonics

Subjects
Chaotic, Physics::Optics, 02 engineering and technology, Optical chaos, 01 natural sciences, Optical switch, Synchronization, no keywords, Vertical-cavity surface-emitting laser, law.invention, Nonlinear Sciences::Adaptation and Self-Organizing Systems, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 010306 general physics, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Laser, Polarization (waves), Nonlinear system, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, business
Abstract

International audience; We report theoretically on the dynamics of two vertical-cavity surface-emitting lasers (VCSELs) coupled unidirectionally through their optical fields, in the context of chaos synchronization and its use for chaos secure communications. One of the two VCSELs is rendered chaotic by optical feedback effects and injects its chaotic output into a second, slave VCSEL. Two different injection schemes are analyzed. A first configuration is such that the master VCSEL injects light polarized orthogonal to that emitted by the free-running slave VCSEL. The orthogonal optical injection induces polarization switching of the slave VCSEL, leading to polarization synchronization between master and slave. A second configuration considers a polarization-preserving optical injection. We report on anticipative and isochronous polarization synchronization and interestingly, we show that VCSEL polarization mode competition enhances the synchronization quality.

Published
2007
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4. Synchronization regimes of unidirectionally coupled VCSELs with orthogonal optical injection

Author

Alexandre Locquet, M. Sciamannal, K. Panaiotov, Ignace Gatare, Georgia Tech Lorraine [Metz], Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Georgia Institute of Technology [Atlanta]-CentraleSupélec-Ecole Nationale Supérieure des Arts et Metiers Metz-Centre National de la Recherche Scientifique (CNRS), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Department of Applied Physics and Photonics [Brussels] (TONA), Vrije Universiteit Brussel (VUB), Ecole Nationale Supérieure des Arts et Metiers Metz-Georgia Institute of Technology [Atlanta]-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)

Subjects
Physics, business.industry, Isotropy, Physics::Optics, 02 engineering and technology, Polarization (waves), Laser, 01 natural sciences, Synchronization, law.invention, Injection locking, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, Physics::Atomic Physics, 010306 general physics, business
Abstract

Poster; International audience; It is shown numerically that two fundamentally different regimes (I and II) of isochronous synchronization are possible, depending on the detuning between the lasers and the strength of the optical injection into the slave. We consider a master laser subjected to isotropic optical feedback and which is optically coupled, in a unidirectional way, to an open-loop slave laser. A master laser which exhibits a dominant x-LP mode and a weak y-LP mode was chosen. The x-LP mode was selected, rotate it to y direction, and optically inject it in the slave laser, which, under free-running conditions, emits x-polarized light.

Published
2007
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5. Synchronization of chaos in mutually coupled VCSELs: numerical study

Author

Krassimir Panajotov, Marc Sciamanna, Atsushi Uchida, Department of Applied Physics and Photonics [Brussels] (TONA), Vrije Universiteit Brussel (VUB), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), and Applied Physics and Photonics

Subjects
Physics, no keyword, business.industry, Synchronization of chaos, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Polarization (waves), Laser, Optical chaos, Topology, 01 natural sciences, Synchronization, Vertical-cavity surface-emitting laser, law.invention, Semiconductor laser theory, 010309 optics, Injection locking, Nonlinear Sciences::Adaptation and Self-Organizing Systems, Optics, law, 0103 physical sciences, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 0210 nano-technology, business
Abstract

Poster; International audience; This work investigates numerically the impact of the polarization mode competition and the frequency detuning between the two lasers on the chaos synchronization of mutually coupled VCSELs. To this aim , a simple rate-equation model of single transverse-mode VCSEL is implemented.

Published
2007
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6. Round-robin measurements of linewidth enhancement factor of semiconductor lasers in COST 288 action

Author

R. Green, Guillaume Huyet, M. Saarinen, M. Pessa, Pascal Landais, Silvano Donati, Ignacio Garces, A. Lindberg, C. Kouloumentas, J.-F. Hayau, J. Poette, J. Lasobras, W. Elsasser, K. Panajotov, J. Von Staden, P. Leinonen, Mauro Pereira, P. Moreno, Richard Schatz, Guido Giuliani, Ioannis Tomkos, T. Fordell, JL Pozo, Judy M Rorison, D. Klonidis, Andrea Fiore, V. Vilokkinen, M. Rossetti, R. Nelander, Frédéric Grillot, A. Tredicucci, A. Wacker, Pascal Besnard, R. Escorihuela, M. Chacinski, Marc Sciamanna, Jan Danckaert, Asier Villafranca, Physics, Applied Physics, Applied Physics and Photonics, Photonics and Semiconductor Nanophysics, Semiconductor Nanophotonics, Institute of Applied Physics (IAP), Darmstadt University of Technology [Darmstadt], Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Department of Applied Physics and Photonics [Brussels] (TONA), Vrije Universiteit Brussel (VUB), Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, no keyword, business.industry, 02 engineering and technology, Laser, 01 natural sciences, Action (physics), law.invention, Vertical-cavity surface-emitting laser, Semiconductor laser theory, 010309 optics, Laser linewidth, 020210 optoelectronics & photonics, Optics, Quantum dot laser, law, 0103 physical sciences, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, Photonics, business
Abstract

International audience; Round-Robin measurements on the linewidth enhancement factor are carried out in many laboratories participating to EU COST 288 Action. Up to 7 different techniques are applied to DFB, VCSELs, QCL, and QD lasers, and results are compared.

Published
2007
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