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Optics Letters

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  • Vol. 24, Iss. 21 — Nov. 1, 1999
  • pp: 1472–1474

Efficient phase estimation for large-field-of-view adaptive optics

T. Fusco, J.-M. Conan, V. Michau, L. M. Mugnier, and G. Rousset  »View Author Affiliations


Optics Letters, Vol. 24, Issue 21, pp. 1472-1474 (1999)
http://dx.doi.org/10.1364/OL.24.001472


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Abstract

We propose a maximum a posteriori–based estimation of the turbulent phase in a large field of view (FOV) to overcome the anisoplanatism limitation in adaptive optics. We show that, whatever the true atmospheric profile, a small number of equivalent layers (two or three) is required for accurate restoration of the phase in the whole FOV. The implications for multiconjugate adaptive optics are discussed in terms of the number and conjugated heights of the deformable mirrors. The number of guide stars required for wave-front measurements in the field is also discussed: three (or even two) guide stars are sufficient to produce good performance.

© 1999 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(100.0100) Image processing : Image processing

Citation
T. Fusco, J.-M. Conan, V. Michau, L. M. Mugnier, and G. Rousset, "Efficient phase estimation for large-field-of-view adaptive optics," Opt. Lett. 24, 1472-1474 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-21-1472


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