Accession Number : ADA339079

Title :   Time-Dependent Propagation of High-Energy Laser Beams through the Atmosphere: II

Corporate Author : LAWRENCE LIVERMORE NATIONAL LAB CA

Personal Author(s) : Fleck, J. A., Jr. ; Morris, J. R. ; Feit, M. D.

PDF Url : ADA339079

Report Date : 18 MAY 1976

Pagination or Media Count : 70

Abstract : Various factors that can affect thermal blooming in stagnation zones are examined, including stagnation-zone motion, longitudinal air motion in the neighborhood of the stagnation zone, and the effects of scenario noncoplanarity. Of these effects, only the last offers any reasonable hope of reducing the strong thermal blooming that normally accompanies stagnation zones; in particular, noncoplanarity should benefit multipulse more than cw beams. The methods of treating nonhorizontal winds hydrodynamically for cw and multipulse steady-state sources are discussed. Pulse "self-blooming" in the triangular pulse approximation is discussed in the context of both single and multipulse propagation. It is shown that self-blooming and multipulse blooming cannot be treated independently.

Descriptors :   *CONTINUOUS WAVE LASERS, TIME DEPENDENCE, WIND, PULSED LASERS, LASER BEAMS, THERMAL BLOOMING, STAGNATION.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE