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Interference effects in backscattering of light by a layer of a discrete random medium
Authors:V. P. Tishkovets  P. V. Litvinov  S. V. Tishkovets
Affiliation:(1) Research Institute of Astronomy, Kharkov National University, Kharkov, 61022, Ukraine;(2) Institute of Radioastronomy, National Academy of Sciences of Ukraine, Kharkov, 61002, Ukraine;(3) Kharkov State Polytechnical University, Kharkov, 61002, Ukraine
Abstract:Multiple backscattering of light by a layer of a discrete random medium is considered. A brief derivation of equations for describing the coherent and incoherent components of scattered light is presented. These equations are solved numerically in the approximation of doubled scattering of light by a semi-infinite medium of spherical scatterers having a size comparable with the wavelength in order to study the effect of the properties of particles on the angular dependence of interference effects. Calculations show that the half-width of the interference peak decreases upon an increase in lateral scattering by particles and that the degree of polarization has a complex angular dependence on the properties of the particles. For an optically thin layer of the medium, the relations defining the interference peak half-width and the scattering angle upon extreme linear polarization as functions of the effective refractive index are given.
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