Testbed for extended-scene Shack-Hartmann and phase retrieval wavefront sensing

Rhonda M. Morgan; Kirill V. Shcheglov; Joseph J. Green; Catherine M. Ohara; Jennifer Roberts; Erkin Sidick

doi:10.1117/12.627747

8 October 2005 Testbed for extended-scene Shack-Hartmann and phase retrieval wavefront sensing

Rhonda M. Morgan, Kirill V. Shcheglov, Joseph J. Green, Catherine M. Ohara, Jennifer Roberts, Erkin Sidick

Proceedings Volume 5903, Astronomical Adaptive Optics Systems and Applications II; 59030I (2005) https://doi.org/10.1117/12.627747
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We have implemented a testbed to demonstrate wavefront sensing and control on an extended scene using Shack-Hartmann and MGS phase retrieval simultaneously. This dual approach allows for both high sensitivity and high dynamic range wavefront sensing. Aberrations are introduced by a silicon-membrane deformable mirror. The detailed characterization of this mirror and its sensitivity matrix are presented. The various Shack-Hartmann algorithms, including a maximum likelihood approach are discussed and compared to phase retrieval results using a point source. The next phase of the testbed will include results with extended scenes.

Citation Download Citation

Rhonda M. Morgan, Kirill V. Shcheglov, Joseph J. Green, Catherine M. Ohara, Jennifer Roberts, and Erkin Sidick "Testbed for extended-scene Shack-Hartmann and phase retrieval wavefront sensing", Proc. SPIE 5903, Astronomical Adaptive Optics Systems and Applications II, 59030I (8 October 2005); https://doi.org/10.1117/12.627747

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