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

Minimum-variance control for woofer–tweeter systems in adaptive optics

Not Accessible

Your library or personal account may give you access

Abstract

The woofer–tweeter concept in adaptive optics consists in correcting for the turbulent wavefront disturbance with a combination of two deformable mirrors (DMs). The woofer corrects for temporally slow-evolving, spatially low-frequency, large-amplitude disturbances, whereas the tweeter is generally its complement, i.e., corrects for faster higher-order modes with lower amplitude. A special feature is that in general both are able to engender a common correction space. In this contribution a minimum-variance solution for the double stage woofer–tweeter concept in adaptive optics systems is addressed using a linear-quadratic-Gaussian approach. An analytical model is built upon previous developments on a single DM with temporal dynamics that accommodates a double-stage woofer–tweeter DM. Monte Carlo simulations are run for a system featuring an 8×8 actuator DM (considered infinitely fast), mounted on a steering tip/tilt platform (considered slow). Results show that it is essential to take into account temporal dynamics on the estimation step. Besides, unlike the other control strategies considered, the optimal solution is always stable.

© 2010 Optical Society of America

Full Article  |  PDF Article
More Like This
Woofer-tweeter control in an adaptive optics system using a Fourier reconstructor

Jean-François Lavigne and Jean-Pierre Véran
J. Opt. Soc. Am. A 25(9) 2271-2279 (2008)

Closed-loop control of a woofer–tweeter adaptive optics system using wavelet-based phase reconstruction

Peter J. Hampton, Pan Agathoklis, Rodolphe Conan, and Colin Bradley
J. Opt. Soc. Am. A 27(11) A145-A156 (2010)

On the optimal reconstruction and control of adaptive optical systems with mirror dynamics

Carlos Correia, Henri-François Raynaud, Caroline Kulcsár, and Jean-Marc Conan
J. Opt. Soc. Am. A 27(2) 333-349 (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 (10)

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

Equations (66)

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