Incoherent and coherent backscattering of light beyond diffusion for subsurface reflectance spectroscopy

Backscattered snake light, which has experienced exactly two large angle scattering, is taken into account together with the diffuse light to model light backscattering. This simple modification is shown to significantly improve the agreement in the radial profile of the intensity of the backscattering light between the model and Monte Carlo simulations. The applications of the analytical model in incoherent and coherent backscattering of light for subsurface reflectance spectroscopy are presented. A simple model for depolarization of backscattering light is also discussed.