Energy characteristics of laser radiation focused in the turbulent atmosphere under wind dominated thermal blooming
S.A. Shlenov1, V.V. Vasiltsov2, V.P. Kandidov1
1Moscow State University, Russia, 119991, Moscow, Leninskie Gory, 1 2Institute on Laser and Information Technologies, Russian Academy of Scienses, Russia, 140700, Shatura, Moskovskaya obl., Svyatoozerskaya st., 1
Keywords: CO-лазер, ИК-излучение, тепловое самовоздействие, ветровая рефракция, турбулентная атмосфера, CO laser, IR radiation, thermal self-action, thermal blooming, turbulent atmosphere
Abstract
Temporal dynamics of maximum intensity and laser power in a finite-size aperture of the focused radiation at a wavelength of 10.6 microns under thermal self-action in a clear turbulent atmosphere is analyzed by means of computer simulation. Propagation of Gaussian beams along up to 160 m path is considered. It is shown that under strong turbulence conditions there are time intervals in which the maximum intensity in the middle of the path of a tightly focused beam is greater than in the focal plane at the end of the path.
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