Calibration and precompensation of noncommon path aberrations for extreme adaptive optics
JOSA A, Vol. 24, Issue 8, pp. 2334-2346 (2007)
http://dx.doi.org/10.1364/JOSAA.24.002334
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Abstract
Noncommon path aberrations (NCPAs) are one of the main limitations of an extreme adaptive optics (AO) system. NCPAs prevent extreme AO systems from achieving their ultimate performance. These static aberrations are unseen by the wavefront sensor and therefore are not corrected in closed loop. We present experimental results validating what we believe to be new procedures of measurement and precompensation of the NCPAs on the AO bench at ONERA (Office National d’Etudes et de Recherches Aérospatiales). The measurement procedure is based on refined algorithms of phase diversity. The precompensation procedure makes use of a pseudo-closed-loop scheme to overcome the AO wavefront-sensor-model uncertainties. Strehl ratio obtained in the images reaches 98.7% at
© 2007 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
(100.3190) Image processing : Inverse problems
(100.5070) Image processing : Phase retrieval
ToC Category:
Atmospheric and Oceanic Optics
History
Original Manuscript: October 25, 2006
Revised Manuscript: February 2, 2007
Manuscript Accepted: February 26, 2007
Published: July 11, 2007
Citation
Jean-François Sauvage, Thierry Fusco, Gérard Rousset, and Cyril Petit, "Calibration and precompensation of noncommon path aberrations for extreme adaptive optics," J. Opt. Soc. Am. A 24, 2334-2346 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-8-2334
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