Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Alain Denis Petit"'
Publikováno v:
Computer Physics Communications. 162:143-150
A program to compute the two-step excitation of sodium atoms ( 3 S 1 / 2 → 3 P 3 / 2 → 4 D 5 / 2 ) using the density-matrix formalism is presented. The BEACON program calculates population evolution and the number of photons emitted by fluorescen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf54c0b0f617797ac0a0cd4d08a9cb78
https://doi.org/10.1016/j.cpc.2004.06.089
https://doi.org/10.1016/j.cpc.2004.06.089
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 85:165-172
Laser photolysis was used to eliminate selectivity non- desirable (toxic, carcinogenic, photosensitive) molecules in complex solutions for applications in various fields, such as the farm-produce industry, cosmetics, perfumes or biology. The principl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2e8912af4cc0534f34752b93093aaab
https://doi.org/10.1016/1010-6030(94)03897-4
https://doi.org/10.1016/1010-6030(94)03897-4
Autor:
J. Chombart, O. Fouche, A. Laloge, X. Regal, Michel Tallon, P. E. Blanc, Jerome Schmitt, R. Foy, Éric Thiébaut, Maud Langlois, Michel Boer, A. Blazit, Alain Denis Petit, A. Le Van Suu, N. Meilard
Publikováno v:
SPIE Proceedings.
ELP-OA ('Etoile Laser Polychromatique pour l'Optique Adaptative) aims at demonstrating the tip-tilt is measurable with a Laser Guide Star (LGS) without any natural guide star. This allows a full sky coverage down to visible wavelengths. ELP-OA is bei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48ef216f157777c6b6c5a3f145ac3eaf
https://doi.org/10.1117/12.858068
https://doi.org/10.1117/12.858068
Autor:
A. Laloge, J. Chombart, P. E. Blanc, Éric Thiébaut, N. Meilard, S. Perruchot, Jerome Schmitt, A. Le Van Suu, Michel Boer, T. Fusco, R. Foy, X. Regal, Michel Tallon, Alain Denis Petit
Publikováno v:
1st AO4ELT conference-Adaptive Optics for Extremely Large Telescopes
1st AO4ELT conference-Adaptive Optics for Extremely Large Telescopes, 2009, Paris, France. pp.04002, ⟨10.1051/ao4elt/201004002⟩
1st AO4ELT conference-Adaptive Optics for Extremely Large Telescopes, 2009, Paris, France. pp.04002, ⟨10.1051/ao4elt/201004002⟩
International audience; We report the status of ELP-OA (Étoile Laser polychromatique pour l'Optique Adaptative), the full demonstrator which we are building at OHP 1.52m telescope. The goal is to open adaptive optics to the domain of visible wavelen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa0fea807ec47343f6c8905de35fe5ab
https://doi.org/10.1051/ao4elt/201004002
https://doi.org/10.1051/ao4elt/201004002
Autor:
Pierre Richaud, Michel Boer, Michel Tallon, Auguste Le Van Suu, Alain Denis Petit, Thierry Fusco, S. Perruchot, P. E. Blanc, Renaud Foy, Éric Thiébaut, Andrée Laloge
Publikováno v:
SPIE Proceedings.
We discuss our Polychromatic Laser Guide Star (PLGS) end-to-end model which relies on the 2-photon excitation of sodium in the mesosphere. We then describe the status of the setup at Observatoire de Haute- Provence of ELP-OA, the (PLGS) concept demon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc96ad75b35806f90d66a434a1255273
https://doi.org/10.1117/12.789287
https://doi.org/10.1117/12.789287
Autor:
Patrick Chevrou, Lothar Noethe, Veronique Bellanger, Michel Tallon, Renaud Foy, Marcos A. van Dam, Julien Girard, Alain Denis Petit, Éric Thiébaut, M. Schöck, Jean-Paul Pique, Jérôme Vaillant, Claudia Karin Hogemann, Francoise-C. Foy
Publikováno v:
Proceedings of SPIE, the International Society for Optical Engineering
Proceedings of SPIE, the International Society for Optical Engineering, 2003, Adaptive Optical System Technologies II. Edited by Wizinowich, Peter L.; Bonaccini, Domenico., 4839, pp.484-491. ⟨10.1117/12.460080⟩
Proceedings of SPIE, the International Society for Optical Engineering, SPIE, The International Society for Optical Engineering, 2003, Adaptive Optical System Technologies II. Edited by Wizinowich, Peter L.; Bonaccini, Domenico., 4839, pp.484-491. ⟨10.1117/12.460080⟩
Proceedings of SPIE, the International Society for Optical Engineering, 2003, Adaptive Optical System Technologies II. Edited by Wizinowich, Peter L.; Bonaccini, Domenico., 4839, pp.484-491. ⟨10.1117/12.460080⟩
Proceedings of SPIE, the International Society for Optical Engineering, SPIE, The International Society for Optical Engineering, 2003, Adaptive Optical System Technologies II. Edited by Wizinowich, Peter L.; Bonaccini, Domenico., 4839, pp.484-491. ⟨10.1117/12.460080⟩
International audience; We briefly recall the principle of the polychromatic laser guide star, which aims at providing measurements of the tilt of incoming wavefronts with a 100% sky coverage, We describe the main results of the feasibility study of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4757550db1a83e53dbd285b9fba79e94
https://hal.science/hal-01118355
https://hal.science/hal-01118355
Autor:
Veronique Bellanger, Alain Denis Petit
Publikováno v:
SPIE Proceedings.
We developed a code aimed at determining the laser parameters leading to the maximum return flux of photons at 0.33 micrometers for a polychromatic sodium Laser Guide Star. This software relies upon a full 48-level collisionless and magnetic-field-fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ec5e60499f6fb718656c031a3e3919c
https://doi.org/10.1117/12.454412
https://doi.org/10.1117/12.454412
Autor:
Andrei Tokovinin, Veronique Bellanger, François Biraben, Michel Tallon, Patrick Chevrou, Richard A. J. Soden, Francoise-Claude Foy, Hayden Fews, Alain Denis Petit, Ruy Deron, Claudia Karin Hoegemann, Vincent Michau, Gilbert Grynberg, Nancy Ageorges, Éric Thiébaut, Olivier Peillet, Celine d'Orgeville, Matthias Schoeck, Patricia Segonds, Jean-Paul Pique, Renaud Foy, Mike Redfern, Daniel Mueller, Markus Laubscher, Jean-Marc Weulersse, Arnold Migus, Jérôme Vaillant
Publikováno v:
SPIE Proceedings.
We describe the current status of the ELP-OA project in which we try to demonstrate in practice that it is possible to measure the tilt of a wave front using only a polychromatic laser guide star and no natural guide star. The first phase of ELP-OA,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4449e4d95dffb6779815b13f6e9782f1
https://doi.org/10.1117/12.409304
https://doi.org/10.1117/12.409304
Autor:
Patricia Segonds, Matthias Schoeck, Claudia Karin Hoegemann, Jean-Paul Pique, Olivier Peillet, Hayden Fews, Jean-Marc Weulersse, Markus Laubscher, Veronique Bellanger, Michel Tallon, Francoise-Claude Foy, Alain Denis Petit, Nancy Ageorges, Renaud Foy, Patrick Chevrou
Publikováno v:
SPIE Proceedings.
We present results from measurements of the return flux from a polychromatic sodium laser guide star produced in Pierrelatte, France during the PASS-2 experiment. In the experiment, photometry of light at 330, 569, 589, and 589.6 nm emitted by mesosp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7717bded14330c577c1242aa5d779b48
https://doi.org/10.1117/12.390338
https://doi.org/10.1117/12.390338
Autor:
Vincent Michau, Veronique Bellanger, Michel Tallon, Nancy Ageorges, Richard A. J. Soden, Patricia Segonds, Ruy Deron, Daniel Mueller, Hayden Fews, Andrei Tokovinin, Olivier Peillet, Gilbert Grynberg, Renaud Foy, Jean-Marc Weulersse, Patrick Chevrou, Arnold Migus, Matthias Schoeck, Mike Redfern, Jean-Paul Pique, Celine d'Orgeville, Éric Thiébaut, Markus Laubscher, Jérôme Vaillant, Claudia Karin Hoegemann, Francoise-Claude Foy, Alain Denis Petit, François Biraben
Publikováno v:
SPIE Proceedings.
Adaptive optics at astronomical telescopes aims at correcting in real time the phase corrugations of incoming wavefronts caused by the turbulent atmosphere, as early proposed by Babcock. Measuring the phase errors requires a bright source, which is l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e459f5d5b8c50df79be07084a66edd72
https://doi.org/10.1117/12.390401
https://doi.org/10.1117/12.390401