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Proceedings Paper

Increasing the bandwidth of a liquid crystal phased array adaptive optics system
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Paper Abstract

In previous work we demonstrated a nematic liquid crystal MEMS adaptive optics system for observation of low earth orbit satellites. However the closed loop bandwidth was limited to 40 Hz due to latency in the interface electronics between the control computer and the device driver. This bandwidth is marginal for compensation of atmospheric turbulence effects, where the Greenwood frequency is often in excess of 100 Hz. Recently the interface has been redesigned and as a result we have been able to nearly double the bandwidth. In this paper we describe laboratory experiments with the faster system.

Paper Details

Date Published: 18 August 2005
PDF: 6 pages
Proc. SPIE 5894, Advanced Wavefront Control: Methods, Devices, and Applications III, 58940M (18 August 2005); doi: 10.1117/12.619315
Show Author Affiliations
David Dayton, Applied Technology Associates (United States)
Steve Browne, Optical Sciences Co. (United States)
John Gonglewski, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 5894:
Advanced Wavefront Control: Methods, Devices, and Applications III
Mark T. Gruneisen; John D. Gonglewski; Michael K. Giles, Editor(s)

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