18 October 2004 Atmospheric compensation over a 2.3 km propagation path with a multi-conjugate (piston-MEMS/modal DM) adaptive system
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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.
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Thomas Weyrauch, Thomas Weyrauch, Mikhail A. Vorontsov, Mikhail A. Vorontsov, Leonid A. Beresnev, Leonid A. Beresnev, Ling Liu, Ling Liu, } "Atmospheric compensation over a 2.3 km propagation path with a multi-conjugate (piston-MEMS/modal DM) adaptive system", Proc. SPIE 5552, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation, (18 October 2004); doi: 10.1117/12.561998; https://doi.org/10.1117/12.561998
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