[Problématique de l'analyse de front d'onde en optique adaptative multiconjuguée]
La problématique de la mesure de front d'onde pour l'Optique Adaptative Multiconjuguée (OAMC) est présentée dans cet article. Dans un premier temps, l'estimation de la couverture de ciel pour un systeme d'OAMC est étudiée. Cette estimation permet, entre autre, un choix entre étoiles naturelles et étoiles lasers. Ensuite, une comparaison des concepts de mesures de front d'onde dits « orienté étoiles » et « orienté couches » est effectuées. Des développements analytiques et une optimisation des deux concepts sont proposés dans le cas simplifié d'un systeme de correction de la couche au sol. Cette étude permet de mettre en évidence les avantages et les inconvénients de chaque concept.
The problematic of wavefront sensing in Multiconjugate Adaptive Optics (MCAO) is addressed in this article. We first focus on the sky coverage estimation which drives, in particular, the choice between natural and laser guide stars and therefore has a major impact on wavefront sensor design. Then a comparison between star oriented and layer oriented concepts is proposed. Analytical developments and optimization of the concepts are derived in the simplest MCAO case: the ground layer AO system. From this study, advantages and drawbacks of each concept are highlighted.
Mot clés : Turbulence, Optique adaptative, Analyse de front d'onde
@article{CRPHYS_2005__6_10_1049_0,
author = {Thierry Fusco and Magalie Nicolle and G\'erard Rousset and Vincent Michau and Amandine Blanc and Jean-Luc Beuzit and Jean-Marc Conan},
title = {Wavefront sensing issues in {MCAO}},
journal = {Comptes Rendus. Physique},
pages = {1049--1058},
publisher = {Elsevier},
volume = {6},
number = {10},
year = {2005},
doi = {10.1016/j.crhy.2005.10.006},
language = {en},
}
TY - JOUR AU - Thierry Fusco AU - Magalie Nicolle AU - Gérard Rousset AU - Vincent Michau AU - Amandine Blanc AU - Jean-Luc Beuzit AU - Jean-Marc Conan TI - Wavefront sensing issues in MCAO JO - Comptes Rendus. Physique PY - 2005 SP - 1049 EP - 1058 VL - 6 IS - 10 PB - Elsevier DO - 10.1016/j.crhy.2005.10.006 LA - en ID - CRPHYS_2005__6_10_1049_0 ER -
%0 Journal Article %A Thierry Fusco %A Magalie Nicolle %A Gérard Rousset %A Vincent Michau %A Amandine Blanc %A Jean-Luc Beuzit %A Jean-Marc Conan %T Wavefront sensing issues in MCAO %J Comptes Rendus. Physique %D 2005 %P 1049-1058 %V 6 %N 10 %I Elsevier %R 10.1016/j.crhy.2005.10.006 %G en %F CRPHYS_2005__6_10_1049_0
Thierry Fusco; Magalie Nicolle; Gérard Rousset; Vincent Michau; Amandine Blanc; Jean-Luc Beuzit; Jean-Marc Conan. Wavefront sensing issues in MCAO. Comptes Rendus. Physique, Volume 6 (2005) no. 10, pp. 1049-1058. doi : 10.1016/j.crhy.2005.10.006. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2005.10.006/
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