Wavefront control for extreme adaptive optics

Lisa A. Poyneer; Bruce A. Macintosh

doi:10.1117/12.506456

24 December 2003 Wavefront control for extreme adaptive optics

Lisa A. Poyneer, Bruce A. Macintosh

Proceedings Volume 5169, Astronomical Adaptive Optics Systems and Applications; (2003) https://doi.org/10.1117/12.506456
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

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.

Citation Download Citation

Lisa A. Poyneer and Bruce A. Macintosh "Wavefront control for extreme adaptive optics", Proc. SPIE 5169, Astronomical Adaptive Optics Systems and Applications, (24 December 2003); https://doi.org/10.1117/12.506456

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