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Proceedings Paper

Beacon creation and characterization for beam control in strong turbulence
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Paper Abstract

There is strong interest in developing adaptive optics solutions for extreme conditions, such as laser beam projection over long, horizontal paths. In most realistic operational scenarios there is no suitable beacon readily available for tracking and wave front sensing. In these situations it is necessary to create a bacon artificially. In this paper we explore two strategies for creating a beacon: (1) scattering an initially focused beam from a surface accomplished compensation for part of the path. In many cases of practical interest, beacons created by scattering of the light from a surface in the scene results in beacons which are anisoplanatic, and hence provide poor beam compensation results. Partial path compensation based on a Rayleigh beacon provides comparable performance in some cases.

Paper Details

Date Published: 23 August 2005
PDF: 8 pages
Proc. SPIE 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, 589506 (23 August 2005); doi: 10.1117/12.619017
Show Author Affiliations
Michael C. Roggemann, Michigan Technological Univ. (United States)
Timothy J. Schulz, Michigan Technological Univ. (United States)
Alex Sergeyev, Michigan Technological Univ. (United States)
Grant Soehnel, Michigan Technological Univ. (United States)

Published in SPIE Proceedings Vol. 5895:
Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II
Michael T. Valley; Mikhail A. Vorontsov, Editor(s)

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