Light transmission in inhomogeneous birefringent medium as a function of propagation and observation angles

摘要

We use the Mueller matrix for inhomogeneous linear birefringent media derived in Savenkov et al. Mueller-matrix model of an inhomogeneous linear birefringent medium: single scattering case. JQSRT 2007;106:475-86 to generate new results on the forward scattering of light using Cloude's coherence matrix method. We show that the intensity of scattered light (m(11)) as a function of observation angle depends on the difference between refractive indices along the eigen polarizations resulting in intensity lost when unpolarized light propagates parallel to the optical axes compared to propagation orthogonal to the optical axis. For a given inhomogeneity (roughness), depolarization strongly depends on the direction of light propagation in the medium. The depolarization at 90 degrees propagation angle is minimal for any value of inhomogeneity. Sample calculations are based on calcite.