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

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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.

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PDF-file: 15 pages; size: 0.7 Mbytes

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Poyneer, L. A.; Bauman, B.; Cornelissen, S.; Jones, S.; Macintosh, B.; Palmer, D. et al. December 17, 2010.

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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.

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PDF-file: 15 pages; size: 0.7 Mbytes

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  • Presented at: MEMS Adaptive Optics V, San Frnacisco, CA, United States, Jan 27 - Jan 27, 2011

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  • Report No.: LLNL-CONF-464837
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1018800
  • Archival Resource Key: ark:/67531/metadc840359

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Office of Scientific & Technical Information Technical Reports

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  • December 17, 2010

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  • May 19, 2016, 3:16 p.m.

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  • May 31, 2016, 4 p.m.

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Poyneer, L. A.; Bauman, B.; Cornelissen, S.; Jones, S.; Macintosh, B.; Palmer, D. et al. The use of a high-order MEMS deformable mirror in the Gemini Planet Imager, article, December 17, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc840359/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.