Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Shack–Hartmann wavefront estimation with extended sources: anisoplanatism influence

Not Accessible

Your library or personal account may give you access

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
More Like This
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)

Intrinsic limitations of Shack–Hartmann wavefront sensing on an extended laser guide source

Damien Gratadour, Eric Gendron, and Gérard Rousset
J. Opt. Soc. Am. A 27(11) A171-A181 (2010)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved