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Proceedings Paper

Thermal-blooming compensation using target-in-the-loop techniques
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Paper Abstract

We report experimental results that demonstrate compensation of extended turbulence and thermal-blooming of high-energy lasers using target-in-the-loop techniques in a scaled laboratory environment. For these experiments the deformable mirror figure was controlled by an algorithm designed to maximize the target-plane intensity as measured by a camera at the transmitter. Results using this TIL configuration were compared under identical conditions to results obtained under control of a Hartmann wavefront sensor and least-squares reconstructor. Experiments were performed for a variety of propagation scenarios anticipated for tactical HEL applications and in all cases the TIL system was seen to outperform the conventional Hartmann-driven adaptive-optics system. We will discuss the details of the the target-in-the-loop algorithm, the laboratory configuration, and the experimental results.

Paper Details

Date Published: 23 August 2005
PDF: 14 pages
Proc. SPIE 5895, Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, 58950N (23 August 2005); doi: 10.1117/12.620949
Show Author Affiliations
Ryan C. Lawrence, MIT Lincoln Lab. (United States)
Arthur Nitkowski, MIT Lincoln Lab. (United States)
Charles Higgs, MIT Lincoln Lab. (United States)
Donald J. Link, Science Applications International Corp. (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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