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Atmospheric and Oceanic Optics

2018 year, number 10

Assessment of the influence of turbulence and regular refraction on laser beam characteristics in the atmospheric boundary layer. Part 2. Laser beam broadening at strong regular refraction

S.L. Odintsov, V.A. Gladkikh, A.P. Kamardin, V.P. Mamyshev, I.V. Nevzorova
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634055, Russia
Keywords: атмосфера, зондирование, лазерное излучение, показатель преломления, рефракция, содар, турбулентность, уширение лазерного пучка, atmosphere, sounding, laser radiation, refractive index, refraction, sodar, turbulence, laser beam broadening

Abstract

Possible deviations of a laser beam from the detector in the case of slant propagation paths are calculated with the use of measured profiles of air temperature in the atmospheric boundary layer. The possible seasonal and diurnal dynamics of the deviations under the effect of regular refraction is considered. The cases of simultaneously strong (regular) refraction of the laser beam and significant beam broadening due to the effect of turbulence are revealed and analyzed.