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Proceedings Paper

The use of a high-order MEMS deformable mirror in the Gemini Planet Imager
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Paper Abstract

We briefly review the development history of the Gemini Planet Imager's 4K Boston Micromachines MEMS deformable mirror. We discuss essential calibration steps and algorithms to control the MEMS with nanometer precision, including voltage-phase calibration and influence function characterization. We discuss the integration of the MEMS into GPI's Adaptive Optics system at Lawrence Livermore and present experimental results of 1.5 kHz closed-loop control. We detail mitigation strategies in the coronagraph to reduce the impact of abnormal actuators on final image contrast.

Paper Details

Date Published: 11 February 2011
PDF: 13 pages
Proc. SPIE 7931, MEMS Adaptive Optics V, 793104 (11 February 2011); doi: 10.1117/12.876496
Show Author Affiliations
Lisa A. Poyneer, Lawrence Livermore National Lab. (United States)
Brian Bauman, Lawrence Livermore National Lab. (United States)
Steven Cornelissen, Boston Micromachines Corp. (United States)
Joshua Isaacs, Lawrence Livermore National Lab. (United States)
Univ. of Wisconsin-Madison (United States)
Steven Jones, Lawrence Livermore National Lab. (United States)
Bruce A. Macintosh, Lawrence Livermore National Lab. (United States)
David W. Palmer, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 7931:
MEMS Adaptive Optics V
Scot S. Olivier; Thomas G. Bifano; Joel A. Kubby, Editor(s)

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