Abstract

We demonstrate that the theories of strong irradiance fluctuations of Yura and Clifford <i>et al.</i>, although they start from slightly different physical models, produce the same predictions for the behavior of an optical wave propagating through strong turbulence. Both theories predict a saturation of the irradiance variance and that in the saturation regime the amplitude correlation length is equal to the lateral coherence length of the optical wave. The detailed structure of the amplitude correlation functions is also similar, showing a more-rapid decay at the origin and an enhanced tail at large separations in comparison to the results of the weak scattering theory.

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