Abstract: Optical method for testing scattering media has been proposed. The technique makes use of inhomogeneous polarized laser radiation as sounding one. If such radiation propagates through scattering medium, light depolarization strictly depends on its characteristics, and this effect provides a way of estimating the statistical parameters of scatterers. Degradation of spatial polarization of sounding radiation is the result of non-local formation of diffracted field. Direct diffraction problem for this model has been solved analytically, and polarization degree distribution in observation plane has been obtained in the random-phase- screen approximation. The theoretical predictions have been compared with experimentally obtained angular dependencies of polarization degree for different values of surface roughness, and the results have been controlled by independent profilometric measurements of diffuser roughness. Obtained results show quite well validity for weak diffusers. !10
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