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Proceedings Paper

Self-referenced High Resolution Adaptive Wavefront Estimation And Compensation
Author(s): Arthur D. Fisher
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Paper Abstract

A relatively simple 'all-optical' system, called a self-referenced interference phase loop (IPL), is presented for measuring spatial and temporal phase fluctuations over an optical wavefront, and also adaptively correcting that wavefront and/or generating a conjugate wave. It is shown that this system can unambiguously (with no phase quadrant ambiguity) estimate and compensate phase in real time over multiple Tr radians of dynamic range/ and is essentially unaffected by simultaneous wave amplitude variations. Furthermore, this system requires no external reference wavefront and can operate on partially coherent and multispectral (i. e, "white light") wavefronts, in which case it estimates and compensates optical-path-distance errors. In addition, the IPL readily lends itself to high resolution "all-optical" implementations containing thousands to millions of spatial resolution elements. The IPL can also be operated as a bistable array in optical information processing and computing applications.

Paper Details

Date Published: 16 January 1986
PDF: 11 pages
Proc. SPIE 0551, Adaptive Optics, (16 January 1986); doi: 10.1117/12.949009
Show Author Affiliations
Arthur D. Fisher, Naval Research Laboratory (United States)

Published in SPIE Proceedings Vol. 0551:
Adaptive Optics
Jacques E. Ludman, Editor(s)

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