Title

Adaptive Phase Distortion Correction in Strong Speckle-Modulation Conditions

Document Type

Article

Publication Date

12-15-2002

Publication Source

Optics Letters

Abstract

We introduce beam-quality metrics for adaptive wave-front control that permit estimation of the degree of laser beam energy concentration on a remotely located extended object based upon the backscattered wave intensity distribution at the receiver. A 37-control-channel adaptive optics system with phase correction of the output wave capable of operating in the presence of speckle-field-induced strong intensity modulation is presented. System operation is based on optimization of the speckle-field-based metric by the stochastic parallel gradient descent technique. Results demonstrate that adaptive wave-front correction using speckle-field-based beam-quality metrics can significantly improve laser beam concentration on extended objects.

Inclusive pages

2155-2157

ISBN/ISSN

0146-9592

Comments

One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

Permission documentation on file.

Publisher

Optical Society of America

Volume

27

Issue

24

Peer Reviewed

yes


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