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Estimation of the Turbulence and Regular Refraction Effects on Laser Beam Parameters in the Atmospheric Boundary Layer: Part 1, Coherence Length and Turbulent Broadening

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Abstract

The coherence length and the degree of broadening of a laser beam under the turbulence effect are estimated from the results of remote acoustic sounding of the atmospheric boundary layer with a 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 was found.

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ACKNOWLEDGMENTS

The work was performed with the use of the equipment of the Atmosphere Common Use Center of the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences.

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Correspondence to S. L. Odintsov.

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Translated by O. Ponomareva

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Odintsov, S.L., Gladkikh, V.A., Kamardin, A.P. et al. Estimation of the Turbulence and Regular Refraction Effects on Laser Beam Parameters in the Atmospheric Boundary Layer: Part 1, Coherence Length and Turbulent Broadening. Atmos Ocean Opt 32, 19–25 (2019). https://doi.org/10.1134/S1024856019010123

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  • DOI: https://doi.org/10.1134/S1024856019010123

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