Abstract

We investigate the controversy over the precise form of the photon diffusion coefficient and suggest that it is largely independent of absorption, i.e., D0=v/3µs. After presentation of the general theoretical arguments underlying this assertion, Monte Carlo simulations are performed and explicitly reveal that the absorption-independent diffusion coefficient gives better agreement with theory than the traditionally accepted photon diffusion coefficient, Dμa=v/3(μs+μa). The importance of resolving this controversy for the proper characterization of the material optical properties is discussed.

© 1997 Optical Society of America

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