Vol. 31, issue 09, article # 2

Odintsov S.L., Gladkikh V.A., Kamardin A.P., Mamyshev V.P., Nevzorova I.V. Assessment of the influence of turbulence and regular refraction on laser beam characteristics in the atmospheric boundary layer. Part 1. Coherence length and turbulent broadening of a laser beam. // Optika Atmosfery i Okeana. 2018. V. 31. No. 09. P. 698–705 [in Russian].
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Abstract:

The coherence length and the degree of broadening of a laser beam under the action of turbulence are estimated from the results of remote acoustic sounding of the atmospheric boundary layer with the Volna-4M sodar. The daily average profile of the coherence length in different seasons is considered. Corrections to the effective radius of a laser beam due to turbulence and the monthly average values of these corrections are calculated. A noticeable excess of the possible broadening of the laser beam in winter above that in summer is revealed.

Keywords:

atmosphere, sounding, coherence, laser radiation, sodar, turbulence, laser beam broadening

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