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.

© 2007 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Scintillation and phase anisoplanatism in Shack-Hartmann wavefront sensing

Clélia Robert, Jean-Marc Conan, Vincent Michau, Thierry Fusco, and Nicolas Vedrenne
J. Opt. Soc. Am. A 23(3) 613-624 (2006)

Differential focal anisoplanatism in laser guide star wavefront sensing on extremely large telescopes

Nicolas Muller, Vincent Michau, Clélia Robert, and Gérard Rousset
Opt. Lett. 36(20) 4071-4073 (2011)

First on-sky results of the CO-SLIDAR Cn2 profiler

Juliette Voyez, Clélia Robert, Jean-Marc Conan, Laurent M. Mugnier, Etienne Samain, and Aziz Ziad
Opt. Express 22(9) 10948-10967 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (30)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription