Výsledky vyhledávání - "Pierre Chavel"

Publikováno v: Photoniques. :22-24

La SFO est entrée dans sa quarantième année. Après une évocation des circonstances de sa fondation, nous mettons en évidence les caractéristiques et les activités qui permettent d’affirmer que notre société a réussi à créer une communa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::691f5163588439eb2898aa849d0032d8
https://doi.org/10.1051/photon/202311822

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La cohérence temporelle en optique classique

Autor: Pierre Chavel

Publikováno v: Photoniques. :51-55

Déterminante pour l’observation d’interférences, la cohérence temporelle est souvent reliée à la comparaison entre différence de marche et longueur de « train d’onde ». Un examen plus détaillé fait ressortir les concepts les plus pert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8e7b70d8b4b14509efa7569ec6b4184
https://doi.org/10.1051/photon/202111151

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Design of a Multimodal Light Sheet Optical System for Multivariate Applications in Phytopathology

Autor: Anthony Cazier, Mama Sangare, Mathieu Hébert, Pierre Chavel

Publikováno v: Optics and Photonics Journal. 11:110-120

The design of optical instruments is an active subject due to improvement in lens techniques, fabrication technology, and data handling capacity. Much remains to do to expand its application to phytopathology, which would be in particular quite usefu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e99412d7fea865f453c1f12b7295faa
https://doi.org/10.4236/opj.2021.115009

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Large-area, high-numerical-aperture multi-level diffractive lens via inverse design: comment

Autor: Philippe Lalanne, Pierre Chavel

Publikováno v: Optica
Optica, Optical Society of America-OSA Publishing, 2021, 8 (7), pp.1009. ⟨10.1364/OPTICA.416017⟩

The memorandum [Optica 7, 252 (2020).OPTIC82334-253610.1364/OPTICA.388697; Optica 7, 1323 (2020).OPTIC82334-253610.1364/OPTICA.408579] is devoted to the design, fabrication, and characterization of an optimized multi-level diffractive lens, emphasizi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3eee6b7a1899d8285e4272746420823
http://hdl.handle.net/20.500.12278/120476

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Study and simulations of speckle effects on BRDF measurements at very high angular resolution

Autor: A. M. Rabal, Mathieu Hébert, Gaël Obein, Thomas Labardens, Pierre Chavel, Lionel Simonot, Yvan Sortais

Publikováno v: IS&T Electronic Imaging Symposium, Material Appearance Conference
IS&T Electronic Imaging Symposium, Material Appearance Conference, Jan 2021, San Francisco, France. ⟨10.2352/ISSN.2470-1173.2021.5.MAAP-140⟩

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b67fed24ad68413dbd644d518b59597c
https://hal.archives-ouvertes.fr/hal-03180579

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Speckle in BRDF measurements: solid angle considerations

Autor: Pierre Chavel, Thomas Labardens, Lionel Simonot, Mathieu Hébert, Yvan Sortais, Gaël Obein

Publikováno v: Frontiers in Optics + Laser Science 2021.

since the bidirectional reflectance distribution function applies to scattering media, it is inherently prone to speckle. Conditions to average out speckle by integration over solid angle both on the illumination side and on the detection side are an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bcd7feefb1930ca229b054eb02187739
https://doi.org/10.1364/fio.2021.jth5a.76

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Fundamental limitations of ultra-flat resonant dielectric metasurfaces

Autor: Carlo Gigli, Pierre Chavel, Philippe Lalanne

Publikováno v: High Contrast Metastructures IX.

There are two physical effects that are exploited nowadays to implement flat metalenses requiring 2𝜋-phase excursion, either subwavelength guidance implementing varying propagation delays, or resonant confinement combining two resonances. We compa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29c87ba95a435adc169b62a7f5e07c33
https://doi.org/10.1117/12.2550172

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Fundamental Limitations of Huygens’ Metasurfaces for Optical Beam Shaping

Autor: Carlo Gigli, Mark L. Brongersma, Pierre Chavel, Philippe Lalanne, Giuseppe Leo, Qitong Li

Publikováno v: Laser and Photonics Reviews
Laser and Photonics Reviews, Wiley-VCH Verlag, 2021, 15 (8), pp.2000448. ⟨10.1002/lpor.202000448⟩

Optical dielectric metasurfaces composed of arrayed nanostructures are expected to enable arbitrary spatial control of incident wavefronts with subwavelength spatial resolution. For phase modulation, one often resorts to two physical effects to imple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c00978c4280b460e2790143a9884911
https://doi.org/10.1002/lpor.202000448

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Electromagnetic analysis for optical coherence tomography based through silicon vias metrology

Autor: E. Herth, G. Vienne, P. Coste, Pierre Chavel, Alain Bosseboeuf, W. A. Iff, Dario Alliata, L. Milord, Christophe Sauvan, Mondher Besbes, Jean-Paul Hugonin

Publikováno v: Applied optics
Applied optics, Optical Society of America, 2019, 58 (27), pp.7472-7488. ⟨10.1364/AO.58.007472⟩

International audience; This paper reports on progress in the analysis of time-domain optical coherence tomography (OCT) applied to the dimensional metrology of through-silicon vias (TSVs), which are vertical interconnect accesses in silicon, enablin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4fcd5313b2ea6a321e43b70abefddfa
https://pubmed.ncbi.nlm.nih.gov/31674397

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Angular reflectance model for ridged specular surfaces, with comprehensive calculation of inter-reflections and polarization

Autor: Lionel Simonot, Pierre Chavel, Mathieu Hébert, Dorian Saint-Pierre

Publikováno v: Journal of the Optical Society of America. A Optics, Image Science, and Vision
Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2019, 36 (11), pp.C51. ⟨10.1364/JOSAA.36.000C51⟩

The color of a surface structured at the mesoscopic scale differs from the one of a flat surface of the same material because of the light inter-reflections taking place in the concavities of the surface, as well as shadowing effects. The color varia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bed8680a1207b8c5a5a1f62d40d8319c
https://hal.archives-ouvertes.fr/hal-02353266

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