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Proceedings Article

Fast phase diversity wavefront sensing for mirror control

[+] Author Affiliations
Mats G. Lofdahl

Lockheed Martin Missiles & Space (Sweden)

Alan L. Duncan

Lockheed Martin Missiles & Space (USA)

Goran B. Scharmer

Stockholm Observatory (Sweden)

Proc. SPIE 3353, Adaptive Optical System Technologies, 952 (September 11, 1998); doi:10.1117/12.321703
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From Conference Volume 3353

  • Adaptive Optical System Technologies
  • Domenico Bonaccini; Robert K. Tyson
  • Kona, HI | March 20, 1998

abstract

We show with simulation experiments that closed-loop phase- diversity can be used without numerical guard-bands for wavefront sensing of low-order wavefronts from extended objects using broad-band filters. This may allow real-time correction at high bandwidth for certain applications. We also present a proper maximum likelihood treatment of Shack- Hartmann data, which includes an imaging model to extract curvature information from the lenslet images. We demonstrate by simple simulations that this approach should allow higher-order wavefront information to be extracted than with traditional Shack-Hartmann wavefront sensing for a given number of lenslets.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Mats G. Lofdahl ; Alan L. Duncan and Goran B. Scharmer
"Fast phase diversity wavefront sensing for mirror control", Proc. SPIE 3353, Adaptive Optical System Technologies, 952 (September 11, 1998); doi:10.1117/12.321703; http://dx.doi.org/10.1117/12.321703


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