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Proceedings Paper

The nonlinear OPC technique for laser beam control in turbulent atmosphere
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Paper Abstract

This paper discusses a novel type of beam director for effective laser beacon formation in deep turbulence conditions. The concept of the proposed beam director is based on an innovative approach employing a Brillouin enhanced four-wave mixing (BEFWM) mechanism for generating a tight (small spot size) laser beacon on a remote image-resolved target. The BEFWM technique enables both amplification and total (phase and amplitude) conjugation of the beacon-forming beam without the need for wavefront sensors, deformable mirrors or predictive feedback algorithms. Total conjugation is critical for beam control in the presence of strong turbulence, whereas conventional adaptive optics methods do not have this capability. The phase information retrieved from the beacon beam can be used in conjunction with an AO system to propagate laser beams in deep turbulence.

Paper Details

Date Published: 8 November 2012
PDF: 10 pages
Proc. SPIE 8535, Optics in Atmospheric Propagation and Adaptive Systems XV, 85350F (8 November 2012); doi: 10.1117/12.974256
Show Author Affiliations
P. Sprangle, U.S. Naval Research Lab. (United States)
Univ. of Maryland, College Park (United States)
J. R. Penano, U.S. Naval Research Lab. (United States)
Vladimir B. Markov, Advanced Systems & Technologies, Inc. (United States)
Anatoliy Khizhnyak, Advanced Systems & Technologies, Inc. (United States)
A. Ting, U.S. Naval Research Lab. (United States)
Bahman Hafizi, Univ. of Maryland, College Park (United States)
C. C. Davis, Univ. of Maryland, College Park (United States)
L. DeSandre, Office of Naval Research (United States)


Published in SPIE Proceedings Vol. 8535:
Optics in Atmospheric Propagation and Adaptive Systems XV
Karin Stein; John Gonglewski, Editor(s)

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