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Proceedings Paper

Instabilities of atmospheric laser propagation
Author(s): Thomas J. Karr
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Paper Abstract

The 'thermal blooming' nonlinearity associated with lasers' atmospheric propagation causes several other propagation instabilities which limit the maximum power transmissible by the atmosphere; these are stimulated thermal Rayleigh scattering, the closed-loop instability, the phase-compensation instability, and, in the case of a repetitively-pulsed laser, the stimulated thermal Brillouin scattering instability. These instabilities, which are excited by optical turbulence along the atmospheric path and by noise of the laser beam, grow through the creation of three-dimensional filament or ribbon structures in the atmosphere which are correlated to disturbances of the laser beam. Phase and intensity compensation can be implemented in principle, via special arrangements of such phase-only correctors as deformable mirrors.

Paper Details

Date Published: 1 May 1990
PDF: 32 pages
Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990); doi: 10.1117/12.18327
Show Author Affiliations
Thomas J. Karr, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 1221:
Propagation of High-Energy Laser Beams Through the Earth's Atmosphere
Peter B. Ulrich; LeRoy E. Wilson, Editor(s)

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