Transmission and Surface Intensity Profiles in Random Media

Abstract
We have performed a series of measurements of transmission and surface intensity profiles vs. thickness in which the coherent depth of penetration and the surface reflectivities are varied independently. The excellent agreement of diffusion theory which includes interfacial coupling in a natural way allows us to determine the domain of validity of the diffusion model and to obtain the first accurate values for the coherent penetration depth and the optical transport mean free path.