An experimental study showing the effects on a standard PI controller using a segmented MEMS DM acting as a mod(lambda) device

Julie C. Smith; James Brown; Darryl J. Sanchez; Denis W. Oesch; Patrick Kelly; Katia Shtyrkova; Carolyn M. Tewksbury-Christle

doi:10.1117/12.859837

12 August 2010 An experimental study showing the effects on a standard PI controller using a segmented MEMS DM acting as a mod(λ) device

Julie C. Smith, James Brown, Darryl J. Sanchez, Denis W. Oesch, Patrick Kelly, Katia Shtyrkova, Carolyn M. Tewksbury-Christle

Author Affiliations +

Proceedings Volume 7816, Advanced Wavefront Control: Methods, Devices, and Applications VIII; 78160H (2010) https://doi.org/10.1117/12.859837
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

The ASALT lab has been investigating the use of a segmented MEMS DM in adaptive optics systems. One of the anticipated benefits of a segmented device is that in monochromatic light the throw is essentially infinite due to the modulo 2π nature of the device. Earlier work demonstrated how this modulo 2π behavior interacts unexpectedly with a standard proportional integral controller. Here we present experimental data on this effect to include the testbed on which the data was taken and the methodology used to measure the effect.

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Julie C. Smith, James Brown, Darryl J. Sanchez, Denis W. Oesch, Patrick Kelly, Katia Shtyrkova, and Carolyn M. Tewksbury-Christle "An experimental study showing the effects on a standard PI controller using a segmented MEMS DM acting as a mod(λ) device", Proc. SPIE 7816, Advanced Wavefront Control: Methods, Devices, and Applications VIII, 78160H (12 August 2010); https://doi.org/10.1117/12.859837

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