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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 20 — Jul. 10, 2007
  • pp: 4329–4340

Distributed modal command for a two-deformable-mirror adaptive optics system

R. Conan, C. Bradley, P. Hampton, O. Keskin, A. Hilton, and C. Blain  »View Author Affiliations


Applied Optics, Vol. 46, Issue 20, pp. 4329-4340 (2007)
http://dx.doi.org/10.1364/AO.46.004329


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Abstract

The design of future single-altitude conjugated adaptive optics (AO) systems may include at least two deformable mirrors (DMs) instead of one as in the current AO system. Each DM will have to correct for a specific spatial frequency range. A method is presented to derive a DM modal basis based on the influence functions of the DM. The modal bases are derived such that they are orthogonal to a given set of modes that restrict the DM correction to a spatial frequency domain. The modal bases have been tested on the woofer–tweeter test bench at the University of Victoria. It has been shown that the rms amplitude of the woofer DM and tweeter DM stroke can be reduced by factors of 3 and 9, respectively, when making the transition from a zonal-driven closed loop to a modal-driven closed loop with the same performance in both cases.

© 2007 Optical Society of America

OCIS Codes
(000.2190) General : Experimental physics
(000.3860) General : Mathematical methods in physics
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Atmospheric and ocean optics

History
Original Manuscript: October 24, 2006
Revised Manuscript: April 10, 2007
Manuscript Accepted: April 14, 2007
Published: June 20, 2007

Citation
R. Conan, C. Bradley, P. Hampton, O. Keskin, A. Hilton, and C. Blain, "Distributed modal command for a two-deformable-mirror adaptive optics system," Appl. Opt. 46, 4329-4340 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-20-4329

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