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Proceedings Article

Wavefront control for extreme adaptive optics

[+] Author Affiliations
Lisa A. Poyneer, Bruce A. Macintosh

Lawrence Livermore National Lab. (USA)

Proc. SPIE 5169, Astronomical Adaptive Optics Systems and Applications, 190 (December 31, 2003); doi:10.1117/12.506456
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From Conference Volume 5169

  • Astronomical Adaptive Optics Systems and Applications
  • Robert K. Tyson; Michael Lloyd-Hart
  • San Diego, California, USA | August 03, 2003


Current plans for Extreme Adaptive Optics systems place challenging requirements on wave-front control. This paper focuses on control system dynamics, wave-front sensing and wave-front correction device characteristics. It may be necessary to run an ExAO system after a slower, low-order AO system. Running two independent systems can result in very good temporal performance, provided specific design constraints are followed. The spatially-filtered wave-front sensor, which prevents aliasing and improves PSF sensitivity, is summarized. Different models of continuous and segmented deformable mirrors are studied. In a noise-free case, a piston-tip-tilt segmented MEMS device can achieve nearly equivalent performance to a continuous-sheet DM in compensating for a static phase aberration with use of spatial filtering.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Lisa A. Poyneer and Bruce A. Macintosh
"Wavefront control for extreme adaptive optics", Proc. SPIE 5169, Astronomical Adaptive Optics Systems and Applications, 190 (December 31, 2003); doi:10.1117/12.506456; http://dx.doi.org/10.1117/12.506456

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