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Proceedings Article

Phase retrieval methods for wavefront sensing

[+] Author Affiliations
Siddarayappa Bikkannavar, David Redding, Joseph Green, Scott Basinger, David Cohen, John Lou, Catherine Ohara, Fang Shi

Jet Propulsion Lab. (USA)

Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77392X (July 22, 2010); doi:10.1117/12.858980
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From Conference Volume 7739

  • Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
  • San Diego, California, USA | June 27, 2010

abstract

Phase retrieval is an image-based wavefront sensing process, used to recover phase information from defocused stellar images. Phase retrieval has proven to be useful for diagnosis of optical aberrations in space telescopes, calibration of adaptive optics systems, and is intended for use in aligning and phasing the James Webb Space Telescope. This paper describes a robust and accurate phase retrieval algorithm for wavefront sensing, which has been successfully demonstrated on a variety of testbeds and telescopes. Key features, such as image preprocessing, diversity adaptation, and prior phase nulling, are described and compared to other methods. Results demonstrate high accuracy and high dynamic range wavefront sensing.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Siddarayappa Bikkannavar ; David Redding ; Joseph Green ; Scott Basinger ; David Cohen, et al.
"Phase retrieval methods for wavefront sensing", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77392X (July 22, 2010); doi:10.1117/12.858980; http://dx.doi.org/10.1117/12.858980


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