Abstract
The properties of light transmission and interference phenomena in high dense media are investigated by means of numerical simulations in terms of nonlinear optical effect. Large intensity fluctuations are observed for nonlinear absorbing media, and do not agree with the fact that a decrease in absorption efficiency results in smaller intensity fluctuations for linear absorption media. From a variation in the speckle contrast it is found that the high-order path-crossing contributes to such intensity fluctuations. Moreover, the probability density of the total transmission changes from Gaussian statistics to log-normal ones for the small total transmission and to negative exponential ones for the large transmission, both of which appear in the strong localization regime. This indicates that the localization of optical waves might be controlled by the nonlinearity of the media.
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