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Proceedings Paper

Atmospheric compensation over a 2.3 km propagation path with a multi-conjugate (piston-MEMS/modal DM) adaptive system
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Paper Abstract

We discuss the expansion of wavefront distortion compensation based on stochastic parallel gradient descent (SPGD) optimization to the control of several wavefront correctors. We describe then a SPGD adaptive optics system that uses a low-order deformable mirror with modal control and a high-resolution (either 132 or 320 control channels) piston-type MEMS mirror. The system was installed at a 2.3km near-horizontal propagation and used for atmospheric compensation experiments. Results obtained for different system configurations are presented.

Paper Details

Date Published: 18 October 2004
PDF: 12 pages
Proc. SPIE 5552, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation, (18 October 2004); doi: 10.1117/12.561998
Show Author Affiliations
Thomas Weyrauch, Univ. of Maryland/College Park (United States)
Mikhail A. Vorontsov, Univ. of Maryland/College Park (United States)
Army Research Lab. (United States)
Leonid A. Beresnev, Army Research Lab. (United States)
Ling Liu, Univ. of Maryland/College Park (United States)


Published in SPIE Proceedings Vol. 5552:
Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation
Michael T. Valley; Mikhail A. Vorontsov, Editor(s)

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