Adaptive optics control system for segmented MEMS deformable mirrors

Carl J. Kempf; Michael A. Helmbrecht; Marc Besse

doi:10.1117/12.846301

18 February 2010 Adaptive optics control system for segmented MEMS deformable mirrors

Carl J. Kempf, Michael A. Helmbrecht, Marc Besse

Proceedings Volume 7595, MEMS Adaptive Optics IV; 75950M (2010) https://doi.org/10.1117/12.846301
Event: SPIE MOEMS-MEMS, 2010, San Francisco, California, United States

Abstract

Iris AO has developed a full closed-loop control system for control of segmented MEMS deformable mirrors. It is based on a combination of matched wavefront sensing, modal wavefront estimation, and well-calibrated open-loop characteristics. This assures closed-loop operation free of problems related to co-phasing segments or undetectable waffle patterns. This controller strategy results in relatively simple on-line computations which are suitable for implementation on low cost digital signal processors. It has been successfully implemented on Iris AO's 111 actuator (37 segment) deformable mirrors used in test-beds and research systems.

Citation Download Citation

Carl J. Kempf, Michael A. Helmbrecht, and Marc Besse "Adaptive optics control system for segmented MEMS deformable mirrors", Proc. SPIE 7595, MEMS Adaptive Optics IV, 75950M (18 February 2010); https://doi.org/10.1117/12.846301

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