Influence functions of a deformable mirror: least-squares wave-front fitting

Barton Plimmer; David Dayton; Mark Spencer; Arthur Hassall

doi:10.1117/12.2321189

18 September 2018 Influence functions of a deformable mirror: least-squares wave-front fitting

Barton Plimmer, David Dayton, Mark Spencer, Arthur Hassall

Proceedings Volume 10772, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2018; 1077205 (2018) https://doi.org/10.1117/12.2321189
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

A continuous-face-sheet Xinetics deformable mirror (DM) is characterized and analyzed using Fizeau interferometer measurements. The influence of each individual actuator on the DM surface is measured. The measured data is then processed to be used as influence functions that define the influence of each actuator on the DM surface. Using the measured data as a spanning set, an orthonormal basis is computed for the span of the set using singular value decomposition. Real surface measurements are taken of the orthonormal basis influences to test for both linear independence of the actuators and actuator linearity with respect to voltage. The efficacy of using the measured basis function data to converge toward a more accurate basis in an iterative process is evaluated. Performance of lower rank (compressed) bases are also evaluated.

Conference Presentation

Citation Download Citation

Barton Plimmer, David Dayton, Mark Spencer, and Arthur Hassall "Influence functions of a deformable mirror: least-squares wave-front fitting", Proc. SPIE 10772, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2018, 1077205 (18 September 2018); https://doi.org/10.1117/12.2321189

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