Abstract
The problem of propagation of a high-intensity light beam in a half-space with random inhomogeneities is treated. An exact solution is constructed through a functional integral representation. For a Gaussian random field, the exact moments of solution are given explicitly. A functional phase-integral method is developed to provide an asymptotic evaluation of the moment integrals. The method is applied to two problems in a stochastic laser beam propagation in random media with a homogeneous background or with a focusing effect.
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Chow, P.L. A functional phase-integral method and applications to the laser beam propagation in random media. J Stat Phys 12, 93–109 (1975). https://doi.org/10.1007/BF01010026
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DOI: https://doi.org/10.1007/BF01010026