Optimization of Electrode Configuration in Surface-Parallel Actuated Deformable Mirrors

Creators: Laslandes, Marie; Pellegrino, Sergio; Steeves, John; Patterson, Keith

Others:: Marchetti, Enrico; Close, Laird M.; Véran, Jean-Pierre

Abstract

Thin, lightweight and low-cost deformable mirrors have been recently proposed, providing a pertinent device for wavefront error correction. We present different approaches to optimize actuator arrangement. The design is optimized according to a given correction requirement, through the number of electrodes, their shape and location. A first method focuses on the compensation of a given optical aberration (astigmatism). A second method directly optimizes the correction of a set of optical modes, taking into account the voltage limitation. We will describe the optimization techniques and give some examples of applications and design performance.

Additional Information

© 2014 SPIE. We thank Xin Ning (Caltech) for help with the optimization algorithm. ML acknowledges the support of a postdoctoral grant from the French Defense procurement agency (DGA) held through Aix-Marseille University, France. Financial support from the Keck Institute of Space Studies and the Dow Resnick Bridge program at Caltech is gratefully acknowledged. A part of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with National Aeronautics and Space Administration (NASA).

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