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Proceedings Paper

Performance of a woofer-tweeter deformable mirror control architecture for high-bandwidth high-spatial resolution adaptive optics
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Paper Abstract

To compensate for large phase errors at high bandwidth, a dual deformable mirror (DM) architecture is introduced. One DM (the tweeter) handles the high spatial resolution errors with a small stroke, high bandwidth, capability while the other DM (the woofer) corrects the larger but more slowly varying phase errors with a larger stroke capability. An offload control architecture is shown to be very effective with the Kolmogorov turbulence spectrum. The architecture is also shown to be effective when used with a self-referencing interferomenter (SRI) wavefront sensor and an exponential control law for phase unwrapping. Performance is verified in simulation and in an advanced wavefront control testbed facility at the Air Force Research Laboratory.

Paper Details

Date Published: 7 September 2006
PDF: 12 pages
Proc. SPIE 6306, Advanced Wavefront Control: Methods, Devices, and Applications IV, 63060B (7 September 2006); doi: 10.1117/12.682482
Show Author Affiliations
Terry J. Brennan, The Optical Sciences Co. (United States)
Troy A. Rhoadarmer, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 6306:
Advanced Wavefront Control: Methods, Devices, and Applications IV
Michael K. Giles; John D. Gonglewski; Richard A. Carreras, Editor(s)

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