Zobrazeno 1 - 7 of 7 pro vyhledávání: '"IMAGERIE ACTIVE LASER"'
1
Parametric Sources for Chemicals and Gas Sensing
Autor: Dherbecourt, Jean-Baptiste, Armougom, Julie, Walter, Guillaume, Hamoudi, Thomas, Melkonian, Jean-Michel, Godard, Antoine, Raybaut, Myriam
Publikováno v: PIERS : Photonics & Electromagnetics Research Symposium
PIERS : Photonics & Electromagnetics Research Symposium, Jun 2019, ROME, Italy
International audience; We present our activities on the development of tunable optical parametric sources for gas sensing. In particular, we introduce the nested cavity OPO, and rapidly tunable OPOs based on aperiodic quasi-phase matching.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a001c9f7524d3a36788e7170065b440c
https://hal.archives-ouvertes.fr/hal-02329045
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2
Fast and Widely-tunable, VBG Spectrally Narrowed, Picosecond Optical Parametric Oscillator for Backscatter Absorption Gas Imaging
Autor: Cyril Drag, Antoine Godard, Jean-Michel Melkonian, Jean-Baptiste Dherbecourt, Guillaume Walter, Didier Henry, Myriam Raybaut
Publikováno v: Imaging and Applied Optics Congress
Imaging and Applied Optics Congress, Jun 2018, ORLANDO, United States. ⟨10.1364/LACSEA.2018.LM5C.3⟩
International audience; We implement a fast and widely tunable picosecond OPO, based on an aperiodicallypoled ,nonlinear crystal, tuned and spectrally narrowed by a chirped VBG, for backscatter absorption gas imaging of N2O around 3.82 μm.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40ccaae7e4d2285e8147b2e9cbe9b44e
https://hal.archives-ouvertes.fr/hal-02329166
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3
Narrow-Linewidth Picosecond Optical Parametric Oscillator for Backscatter Absorption Gas Imaging
Autor: Didier Henry, Jean-Michel Melkonian, Jean-Baptiste Dherbecourt, Cyril Drag, Myriam Raybaut, Guillaume Walter, Antoine Godard
Publikováno v: MICS 2018
MICS 2018, Mar 2018, STRASBOURG, France
International audience; A picosecond OPO combining an aperiodically-poled nonlinear crystal and a chirped VBG is used for backscatter absorption gas imaging of N2O at atmospheric pressure. The tunability is 215 nm around 3.82 μm in 130 ms.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ea17b9c53ca8b49b187a2d1aa9b0340
https://hal.archives-ouvertes.fr/hal-02020264
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4
Static speckle polarimetric imaging for material study, and dynamic for the detection of tumoral micro-vascularization
Autor: Dupont, Jan
Publikováno v: Optique / photonique. UNIVERSITE DE TOULOUSE, 2017. Français
Lors de la diffusion d'une onde électromagnétique sur une surface de rugosité aléatoire, un champ de speckle, dont les caractéristiques dépendent de la surface considérée, se forme. L'étude de la polarisation en champs de speckle donne accè
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::98854ee7fbe8850a80daef113ca8d474
https://hal.archives-ouvertes.fr/tel-01699295/document
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5
Contribution of 3D active laser imaging with focal plane array, embeddable on drone, for improvement of high spatial resolution terrain mapping
Autor: Coyac, Antoine
Publikováno v: Optique / photonique. INSTITUT SUPERIEUR DE L'AERONAUTIQUE ET DE L'ESPACE (ISAE); UNIVERSITE DE TOULOUSE, 2017. Français
Knowledge of the environment in which an aircraft operates is capital, especially in the Defense and aviation fields, regardless of weather conditions. Digital Elevation Model's generation, in any conditions, from high spatial resolution optical sens
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2ac62cb495ce51fe2df597170fa0dc28
https://hal.archives-ouvertes.fr/tel-01702823
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6
Comparaison théorique et expérimentale des performances après traitement de l’imagerie active et de l’IR2 en conditions dégradées
Autor: Bernard, Erwan
Publikováno v: Optique / photonique. UNIVERSITE DE TOULOUSE III-PAUL SABATIER, 2015. Français
Thermal imaging cameras are widely used in military contexts for their day and night vision capabilities and their observation range; there are based on passive infrared sensors (e.g. MWIR or LWIR range). Under bad weather conditions or when the targ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8bf6328d60fb47717cdb2c12a05cc72a
https://hal.archives-ouvertes.fr/tel-01408719
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7
Theorical and experimental comparison of active and thermal imaging after post-processing under adverse conditions
Autor: Bernard, Erwan
Publikováno v: Optique / photonique. UNIVERSITE DE TOULOUSE III-PAUL SABATIER, 2015. Français
Thermal imaging cameras are widely used in military contexts for their day and night vision capabilities and their observation range; there are based on passive infrared sensors (e.g. MWIR or LWIR range). Under bad weather conditions or when the targ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2592::8bf6328d60fb47717cdb2c12a05cc72a
https://hal.archives-ouvertes.fr/tel-01408719
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