Turbulence thermal blooming interactions: static

David L. Fried; Roque K. Szeto

doi:10.1117/12.18341

1 May 1990 Turbulence thermal blooming interactions: static

David L. Fried, Roque K. Szeto

Author Affiliations +

Proceedings Volume 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere; (1990) https://doi.org/10.1117/12.18341
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

In view of the possibility that turbulence-thermal blooming interactions (TTBI) in laser beam atmospheric propagation may yield rapidly growing small scintillations, and ultimately lead to severe beam degradation, attention is presently given to a Born approximation/perturbation transmitter system in a turbulent atmosphere without net wind or beam slew, but with the important effect of 'smearing' in high spatial frequency wavefront distortion due to a random (zero mean) atmospheric wind velocity. The perturbed high energy beam, as well as the perturbed probe beam sensed by the adaptive optics system, are shown to satisfy a system of first-order linear ordinary differential equations. It is found that the presence of the small random wind plays a major role in limiting the growth of TTBI effects.

Citation Download Citation

David L. Fried and Roque K. Szeto "Turbulence thermal blooming interactions: static", Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990); https://doi.org/10.1117/12.18341

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