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Védrenne N, Michau V, Robert C, et al. Shack-Hartmann wavefront estimation with extended sources: anisoplanatism influence. J Opt Soc Am A Opt Image Sci Vis. 2007;24(9):2980-93doi: 10.1364/josaa.24.002980.
Védrenne, N., Michau, V., Robert, C., & Conan, J. M. (2007). Shack-Hartmann wavefront estimation with extended sources: anisoplanatism influence. Journal of the Optical Society of America. A, Optics, image science, and vision, 24(9), 2980-93. https://doi.org/10.1364/josaa.24.002980
Védrenne, Nicolas, et al. "Shack-Hartmann wavefront estimation with extended sources: anisoplanatism influence." Journal of the Optical Society of America. A, Optics, image science, and vision vol. 24,9 (2007): 2980-93. doi: https://doi.org/10.1364/josaa.24.002980
Védrenne N, Michau V, Robert C, Conan JM. Shack-Hartmann wavefront estimation with extended sources: anisoplanatism influence. J Opt Soc Am A Opt Image Sci Vis. 2007 Sep;24(9):2980-93. doi: 10.1364/josaa.24.002980. PMID: 17767270.
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J Opt Soc Am A Opt Image Sci Vis. 2007 Sep;24(9):2980-93. doi: 10.1364/josaa.24.002980.

Shack-Hartmann wavefront estimation with extended sources: anisoplanatism influence.

Journal of the Optical Society of America. A, Optics, image science, and vision

Nicolas Védrenne, Vincent Michau, Clélia Robert, Jean-Marc Conan

Affiliations

  1. Office National d'Etudes et de Recherche Aerospatiales, Optics Department, Châtillon, France. [email protected]

PMID: 17767270 DOI: 10.1364/josaa.24.002980

Abstract

Anisoplanatism limits the correction field of adaptive optics (AO). In the case of Shack-Hartmann measurement performed on extended sources it may also strongly affect wavefront estimation accuracy. An analytical formalism has been previously proposed to quantify anisoplanatism slope measurement error. It is exploited here to derive the most relevant quantity in AO, the wavefront error. Analytical and end-to-end simulation results are compared in three cases: solar observation, weakly perturbed near-to-ground observation, and strongly perturbed near-to-ground observation. In every case, anisoplanatism wavefront error takes significant values. The accuracy of the analytical model is investigated in detail. Three contributions to the slope error previously identified are considered: phase anisoplanatism, scintillation anisoplanatism, and coupling between scintillation and phase anisoplanatism. The influence of both scintillation and coupling contributions to the wavefront error is confirmed here.

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