Abstract
This paper deals with three-dimensional redistribution of intensity over the cross section of a powerful light beam of a ruby laser saturating the absorption in the atmospheric vapor line 694.380 nm. Calculation of the beam contraction near the axis with the initial angular divergence taken into account, was carried out within the framework of the transfer equation for conditions corresponding to nonturbid atmosphere. The change of the effective light beam radius was also considered as a function of path length and initial radiation intensity.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 58–62, March, 1980.
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Lugin, É.V., Ponomarev, Y.N. Redistribution of intensity in the cross section of a powerful light beam after saturation of absorption. Soviet Physics Journal 23, 226–230 (1980). https://doi.org/10.1007/BF00895082
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DOI: https://doi.org/10.1007/BF00895082