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Proceedings Paper

Twenty-five years of thermal blooming: an overview
Author(s): Frederick G. Gebhardt
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Paper Abstract

A development history is presented for the last 25 years of research into the phenomenon of thermal blooming associated with high energy laser (HEL) beam atmospheric propagation. Attention is given to the problem of convection-dominated thermal blooming, which is the most important blooming-associated problem encountered by CW and repetitively pulsed HELs. Important results and scaling parameters are presented for the characterization of steady-state, convection-dominated whole-beam thermal-blooming effects in the cases of (1) a collimated beam in a homogeneous atmosphere, (2) focused-beam propagation, encompassing the effects of wind and beam slewing and finite attenuation, and (3) ground-to-space propagation, with and without phase-compensation.

Paper Details

Date Published: 1 May 1990
PDF: 24 pages
Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990); doi: 10.1117/12.18326
Show Author Affiliations
Frederick G. Gebhardt, Science Applications International Corp. (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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