V.А. Banakh - Dr.Sc. (Phys.-Math.), Head of Laboratory, V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Sciences. E-mail: banakh@iao.ru А.А. Sukharev - Ph.D. (Phys.-Math.), Research Scientist, V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Sciences. E-mail: sukharev@iao.ru А.V. Falits - Ph.D. (Phys.-Math.), Senior Research Scientist, V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Sciences. E-mail: falits@iao.ru

Presents the results of a numerical study of the effect of regular and turbulized shock wave at the laser beam passing through it at its further propagation in a turbulent atmosphere. The problem of propagation of laser beam through the shock wave was solved nu-merically based on the parabolic equation for the complex amplitude of the field of the propagating wave. We use the method of splitting into physical factors with the partition of the propagation path on the layers, which turbulent distortions of optical beam are simulated using phase screen. Between phase screens is taken into account only diffraction. The phase screens of the shock wave were simulated according the spatial distribution of the mean value and the structure characteristic of the refractive index for the case of beam propagation in the direction perpendicular to the cone surface. The phase screen of atmospheric path were simulated was based on the Kolmogorov turbulence model of the refractive index of air using a semi-empirical model A.S. Gurvich for altitude profile in the atmosphere. The studies of the effect of atmospheric turbulence on the manifestation aerooptical effects arising during propagation of optical beam through the shock wave on atmospheric paths of different geometry and length are performed. The analysis of the mean intensity, intensity fluctuations of optical beams propagating through the shock wave in the atmosphere are present. It is shown that with increasing optical turbulence in the atmosphere is suppressed aerooptical effects and at the worst conditions for the propagation of light path length may be their complete suppression. However, the aftereffect of the shock wave can affect significant distances after it even under the worst conditions for the propagation of light.

 

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