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Proceedings Paper

Laser beacon adaptive optics for power beaming applications
Author(s): Robert Q. Fugate
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Paper Abstract

This paper discusses the laser beam control system requirements for power beaming applications. Power beaming applications include electric and thermal engine propulsion for orbit transfer, station changing, and recharging batteries. Beam control includes satellite acquisition, high accuracy tracking, higher order atmospheric compensation using adaptive optics, and precision point-ahead. Beam control may also include local laser beam clean-up with a low order adaptive optics system. This paper also presents results of tracking and higher-order correction experiments on astronomical objects. The results were obtained with a laser beacon adaptive optics system at Phillips Laboratory's Starfire Optical Range near Albuquerque, NM. At a wavelength of 0.85 micrometers , we have achieved Strehl ratios of approximately 0.50 using laser beacons and approximately 0.65 using natural stars for exposures longer than one minute on objects of approximately 8th magnitude. The resulting point spread function has a full width half maximum (FWHM) of 0.13 arcsec.

Paper Details

Date Published: 1 May 1994
PDF: 9 pages
Proc. SPIE 2121, Laser Power Beaming, (1 May 1994); doi: 10.1117/12.174170
Show Author Affiliations
Robert Q. Fugate, Air Force Phillips Lab. (United States)

Published in SPIE Proceedings Vol. 2121:
Laser Power Beaming
Jack V. Walker; Edward E. Montgomery, Editor(s)

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