Influence of scattering anisotropy on reflected diffuse light probed by diffusing-wave spectroscopy

In this work, we study theoretically and experimentally the diffuse reflection of light on scattering media, and show how the limits of the diffusion approximation can be overcome using improved models. We focus on diffusing-wave spectroscopy (DWS) measurements, which provide access to the distribution of light paths via the time correlation function of light fluctuations induced by the motion of scatterers. Since both the influence of polarization and scattering anisotropy lead to deviations from scalar diffusion theory.