We investigated the dependence of the diffusion coefficient on the absorption coefficient by studying the propagation of light emitted by an isotropic source in an infinitely extended medium. Comparisons with both experimental and numerical results showed that the diffusion equation gives a better description of photon migration when the diffusion coefficient is assumed to be independent of absorption.
© 1997 Optical Society of America
Michele Bassani, Fabrizio Martelli, Giovanni Zaccanti, and Daniele Contini, "Independence of the diffusion coefficient from absorption: experimental and numerical evidence," Opt. Lett. 22, 853-855 (1997)