Diffraction of the optical beam on a shock wave in the vicinity of a supersonic aircraft
V.A. Banakh, A.A. Sukharev, A.V. Falits
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: diffraction, a shock wave, mean intensity, angular deviation, focusing of optical radiation
Abstract
Results of calculation of the mean intensity and deviation from the rectilinear direction of propagation of the optical beam crossing a shock wave at the beginning of a path in a homogeneous medium are present. It is shown that the spatial inhomogeneity of the refractive index of air in the area occupied by a shock wave in the vicinity of a conical body moving with the supersonic speeds can cause focusing effect on a beam intersecting shock wave. Magnitude of angular displacements of a beam, crossing shock wave, depends only on the height above the Earth's surface at which the shock wave is formed. The impact of shock wave on a beam crossing it decreases with the height increase.
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