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Proceedings Paper

Adaptive compensation of atmospheric effects with a high-resolution micromachined deformable mirror
Author(s): Thomas Weyrauch; Mikhail A. Vorontsov; John W. Gowens II
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Paper Abstract

We present experimental results for the adaptive compensation of atmospheric turbulence effects on a free-space laser communication links at near horizontal propagation paths over 2.5 km and 5 km lengths. A high-resolution micro-machined piston type mirror array (12x12 elements) and a fast beam steering mirror were used in an adaptive optics laser communication system based on the model-free stochastic parallel gradient descent (SPGD) optimization wavefront control technique. Control of the mirror was performed by a VLSI SPGD micro-controller. The experimental results demonstrate the improvement of the receiver performance (fiber coupling efficiency) on a summer day with a refractive index structure constant in the order of Cn2≈10-14 m-2/3.

Paper Details

Date Published: 6 November 2002
PDF: 10 pages
Proc. SPIE 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV, (6 November 2002);
Show Author Affiliations
Thomas Weyrauch, Army Research Lab. (United States)
Mikhail A. Vorontsov, Army Research Lab. (United States)
John W. Gowens II, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 4825:
High-Resolution Wavefront Control: Methods, Devices, and Applications IV
John D. Gonglewski; Mikhail A. Vorontsov; Mark T. Gruneisen; Sergio R. Restaino; Robert K. Tyson, Editor(s)

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