, Volume 14, Issue 1, pp 99-115

Time-dependent propagation of high-energy laser beams through the atmosphere: II

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Abstract

Various factors that can effect thermal blooming in stagnation zone situations 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 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. Aspects of pulse “self-blooming” are also considered.

Work was performed under the auspices of the U. S. Energy Research and Development Administration under contract W-7405-Eng-48, U. S. Navy Contract N00014-76-F-0017 and U. S. Army Contract W31U31-73-8543.