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Your search keyword '"Tisserand, Stéphane"' showing total 32 results
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32 results on '"Tisserand, Stéphane"'

1. Adaptive perfectly matched layer for Wood's anomalies in diffraction gratings

Author

Vial, Benjamin, Zolla, Frédric, Nicolet, André, Commandré, Mireille, and Tisserand, Stéphane

Subjects
Physics - Optics
Abstract

We propose an Adaptive Perfectly Matched Layer (APML) to be used in diffraction grating modeling. With a properly tailored co-ordinate stretching depending both on the incident field and on grating parameters, the APML may efficiently absorb diffracted orders near grazing angles (the so-called Wood's anomalies). The new design is implemented in a finite element method (FEM) scheme and applied on a numerical example of a dielectric slit grating. Its performances are compared with classical PML with constant stretching coefficient., Comment: arXiv admin note: substantial text overlap with arXiv:1302.1032

Published
2015

2. Transmission enhancement through square coaxial apertures arrays in metallic film: when leaky modes filter infrared light

Author

Vial, Benjamin, Bedu, Frédéric, Dallaporta, Hervé, Commandré, Mireille, Demésy, Guillaume, Nicolet, André, Zolla, Frédéric, Tisserand, Stéphane, and Roux, Laurent

Subjects
Physics - Optics
Abstract

We consider arrays of square coaxial apertures in a gold layer and study their diffractive behavior in the far infrared region. These structures exhibit a resonant transmission enhancement that is used to design tunable bandpass filters. We provide a study of their spectral features and show by a modal analysis that the resonance peak is due to the excitation of leaky modes of the open photonic structure. Fourier transform infrared (FTIR) spectrophotometry transmission measurements of samples deposited on Si substrate show good agreement with numerical results and demonstrate angular tolerance up to 30 degrees of the fabricated filters., Comment: 4 pages, 3 figures

Published
2014
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3. Resonant metamaterial absorbers for infrared spectral filtering: quasimodal analysis, design, fabrication and characterization

Author

Vial, Benjamin, Demésy, Guillaume, Zolla, Frédéric, Nicolet, André, Commandré, Mireille, Hecquet, Christophe, Begou, Thomas, Tisserand, Stéphane, Gautier, Sophie, and Sauget, Vincent

Subjects
Physics - Optics
Abstract

We present a modal analysis of metal-insulator-metal (MIM) based metamaterials in the far infrared region. These structures can be used as resonant reflection bandcut spectral filters that are independent of the polarization and direction of incidence because of the excitation of quasimodes (modes associated with a complex frequency) leading to quasi-total absorption. We fabricated large area samples made of chromium nanorod gratings on top of Si/Cr layers deposited on silicon substrate and measurements by Fourier Transform spectrophotometry show good agreement with finite element simulations. A quasimodal expansion method is developed to obtain a reduced order model that fits very well full wave simulations and that highlights excitation conditions of the modes., Comment: 8 pages, 7 figures

Published
2014
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5. Development and integration of new functions in InGaAs imaging

Author

Colin, Thierry, primary, Dagher, Gulnar, additional, Bonvalot, Cyrille, additional, Grille, Romain, additional, Renaudat Saint-Jean, Margaux, additional, Fantini, Jérome, additional, Coussement, Jérome, additional, Péré-Laperne, Nicolas, additional, Tisserand, Stéphane, additional, Hubert, Marc, additional, Sauget, Vincent, additional, Bigot, Kevin, additional, Courcol, Yves, additional, and Lonjaret, Hervé, additional

Published
2022
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20. Formation of 4-beam laser interference patterns for nanolithography

Author

Zhang, Jin, primary, Wang, Zuobin, additional, Verevkin, Yury K., additional, Olaizola, Santiago M., additional, Peng, Changsi, additional, Tan, Chunlei, additional, Rodriguez, Ainara, additional, Daume, Eric Y., additional, Berthou, Thierry, additional, Tisserand, Stéphane, additional, and Ji, Ze, additional

Published
2007
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21. Laser damage on diffractive optics

Author

Gallais, Laurent, primary, Demesy, Guillaume, additional, Commandré, Mireille, additional, Tisserand, Stéphane, additional, Gauthier, Sophie, additional, Reversat, Fabien, additional, and Hubert, Marc, additional

Published
2006
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29. Development and integration of new functions in InGaAs imaging

Author

Andresen, Bjørn F., Fulop, Gabor F., Zheng, Lucy, Kimata, Masafumi, Miller, John Lester, Kim, Young-Ho, Colin, Thierry, Dagher, Gulnar, Bonvalot, Cyrille, Grille, Romain, Renaudat Saint-Jean, Margaux, Fantini, Jérome, Coussement, Jérome, Péré-Laperne, Nicolas, Tisserand, Stéphane, Hubert, Marc, Sauget, Vincent, Bigot, Kevin, Courcol, Yves, and Lonjaret, Hervé

Published
2022
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31. Analysis of diffraction gratings via their resonances.

Author

Vial, Benjamin, Commandré, Mireille, Zolla, Frédéric, Nicolet, André, and Tisserand, Stéphane

Subjects
OPTICAL polarization, OPTICAL diffraction, RESONANCE, FINITE element method, ANISOTROPY, OPTICAL reflection, DIELECTRICS
Abstract

We analyze diffraction gratings via their resonances by a direct determination of the eigenmodes and the complex eigenfrequencies using a finite element method (FEM), that allows to study mono- or bi-periodic gratings with a maximum versatility : complex shaped patterns, with anisotropic and graded index material, under oblique incidence and arbitrary polarization. In order to validate our method, we illustrate an example of a four layer dielectric slab, and compare the results with a specific method that we have called tetrachotomy, which gives us numerically the poles of the reflection coefficient (which corresponds to the eigenfrequencies of the structure). [ABSTRACT FROM AUTHOR]

Published
2011
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32. Manufacturing, testing, and metrology of axi-symmetric circular phase masks for stellar coronagraphy

Author

N'Diaye, Mamadou, Dohlen, Kjetil, Tisserand, Stéphane, Gautier, Sophie, El Hadi, Kacem, Moreaux, Gabriel, Soummer, Rémi, Cuevas, Salvador, and Sánchez-Pérez, Celia

Abstract

Stellar coronagraphs using circular phase masks are promising concepts dedicated to the image suppression of an observed bright star in order to enhance the substellar mass companions present in its vicinity, typically 2 /D angular separation. These concepts include a focal plane phase mask which introduces a phase delay on a part of the stellar image. With an adequate choice of the mask parameters (thickness, diameter), the light going through the mask and the light going outside the mask will interfere destructively inside the geometric pupil in the following pupil plane. The light rejected outside this re-imaged pupil will be blocked by a Lyot stop. Typically, the mask physical size is about F, where F denotes the f-number of the optical system, and the mask thickness depends on the required phase shifting. The contrast provided by these concepts is highly related to the quality of thickness profile of the phase mask and therefore, severe manufacturing tolerances are necessary to reach the theoretical performance of the corresponding coronagraphic system. In 2007, we designed a Roddier & Roddier phase mask with a 65 m diameter and ordered it to GEPI of Paris Observatory which manufactured it using ion etching process. A roughness of 0.8 nm rms and a transition width of 1% of the mask diameter were measured with a profilometer for this mask showing the good quality of the mask (N'Diaye et al. 2010). We pursue our efforts to design and manufacture high quality masks in collaboration with the firm SILIOS. Several tests of manufacturing procedures are currently realized to reach the best trade-off between mask roughness and mask transition width. These values, measured in our laboratory with a profilometer, allow us to determine the best configuration for fabrication. In addition, by knowing the mask profile, we can estimate theoretically the performance that can be reached.

Published
2011
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