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Proceedings Paper

Experimental analysis of diffraction effects from a segmented MEMS deformable mirror for a closed loop adaptive optics system
Author(s): Katia Shtyrkova; Loretta Arguello; Denis Oesch; Darryl J. Sanchez; Patrick Kelly; Carolyn Tewksbury-Christle; Julie Smith
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Paper Abstract

Micro-Electro-Machined Systems (MEMS) have been increasingly used as mirrors in place of conventional continuous face sheet deformable mirrors (DM) in adaptive optics (AO) systems. Here we study the diffraction effects introduced into the optical path when a segmented MEMS DM is used to correct for the wavefront aberrations. Diffraction effects are monitored through the intermediate focus plane prior to the wavefront sensor. Low pass spatial filter is used at that plane in order to investigate how the masking of various diffraction orders affects the phase. Measured phase and focal image plane data for various turbulence conditions are presented and analyzed.

Paper Details

Date Published: 12 August 2010
PDF: 14 pages
Proc. SPIE 7816, Advanced Wavefront Control: Methods, Devices, and Applications VIII, 781608 (12 August 2010); doi: 10.1117/12.861544
Show Author Affiliations
Katia Shtyrkova, Air Force Research Lab. (United States)
Loretta Arguello, Being-LTS (United States)
Denis Oesch, Science Applications International Corp. (United States)
Darryl J. Sanchez, Air Force Research Lab. (United States)
Patrick Kelly, Air Force Research Lab. (United States)
Carolyn Tewksbury-Christle, Air Force Research Lab. (United States)
Julie Smith, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 7816:
Advanced Wavefront Control: Methods, Devices, and Applications VIII
David C. Dayton; Troy A. Rhoadarmer; Darryl J. Sanchez, Editor(s)

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