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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 9 — Mar. 20, 2008
  • pp: 1317–1326

Laboratory demonstration of accurate and efficient nanometer-level wavefront control for extreme adaptive optics

Lisa A. Poyneer, Daren Dillon, Sandrine Thomas, and Bruce A. Macintosh  »View Author Affiliations


Applied Optics, Vol. 47, Issue 9, pp. 1317-1326 (2008)
http://dx.doi.org/10.1364/AO.47.001317


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Abstract

A 32 × 32 microelectricalmechanical systems mirror is controlled in a closed-loop adaptive optics test bed with a spatially filtered wavefront sensor (WFS), Fourier transform wavefront reconstruction, and calibration of references with a high-precision interferometer. When correcting the inherent aberration of the mirror, 0.7 nm rms phase error in the controllable band is achieved. When correcting an etched phase plate with atmospheric statistics, a dark hole 10 3 deeper than the uncontrollable phase is produced in the phase power spectral density. Compensation of the mirror’s influence function is done with a Fourier filter, which results in improved loop convergence. Use of the spatial filter is shown to reduce the gain variability of the WFS in a quadcell configuration.

© 2008 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(230.3990) Optical devices : Micro-optical devices
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: September 19, 2007
Revised Manuscript: December 21, 2007
Manuscript Accepted: January 4, 2008
Published: March 19, 2008

Citation
Lisa A. Poyneer, Daren Dillon, Sandrine Thomas, and Bruce A. Macintosh, "Laboratory demonstration of accurate and efficient nanometer-level wavefront control for extreme adaptive optics," Appl. Opt. 47, 1317-1326 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-9-1317


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References

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