Physics – Optics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1312..422j&link_type=abstract
IN: Propagation engineering: Third in a series; Proceedings of the Meeting, Orlando, FL, Apr. 18-20, 1990 (A91-51251 22-47). Bel
Physics
Optics
Atmospheric Optics, Boundary Layer Control, Laser Beams, Optical Paths, Telescopes, Temperature Control, Laser Cavities, Laser Power Beaming, Mirrors, Refractivity
Scientific paper
Techniques used for reducing index-of-refraction variations present in the gas contained in the optical path of a high-energy laser beam director are described. These include boundary layer control on mirrors, thermal conditioning of beam-expander cavities and coude paths, and thermal control of vacuum- and exit-window configurations. Attention is focused on design concepts for each of the techniques, and beam-path conditioning systems combining these approaches are considered. Current capabilities of beam-path conditioning systems are summarized, and recommendations for future work are outlined.
Holderbaum Glenda S.
Johnson David C.
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