Physics – Optics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1221..168f&link_type=abstract
IN: Propagation of high-energy laser beams through the earth's atmosphere; Proceedings of the Meeting, Los Angeles, CA, Jan. 15-
Physics
Optics
Adaptive Optics, Atmospheric Turbulence, High Power Lasers, Laser Beams, Light Transmission, Thermal Blooming, Born Approximation, Fourier Transformation, Geometrical Optics, Refractivity, Scintillation
Scientific paper
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.
Fried David L.
Szeto Roque K.
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