Speckle autocorrelation spectroscopy and pulse transmission as probes of photon transport in strongly-scattering random media.
01 January 1990
Photon transport in strongly scattering random media has been examined by two experimental methods in order to search for departures from diffusive transport and the approach to strong photon localization. The first method measures the evolution in the transmitted shape of a short light pulse introduced into the interior of the random medium via an optical fiber. Comparison of the observed pulse shape with calculated solution to the diffusion equation, including loss, as the effective sample thickness is varied permits quantitative determination of both the elastic and inelastic photon mean-free path lengths.