Abstract

Photocount distributions have been calculated and experimentally determined for light transmitted through a dispersion of particles of varying density. From these the coherent and incoherent components of the transmitted light intensity could be determined. The coherent intensity was shown to obey the Lambert–Beer law. Autocorrelation functions of light scattered in the presence of multiple light scattering were measured and inverted by using an inverse Laplace transform technique. The single-scattering and multiple-scattering contributions can be distinguished in the corresponding spectra of decay times. The amount of multiple light scattering increases with increasing concentration of scatterers and reaches the limit of strong multiple light scattering when the transport of light through the dispersion becomes diffusive.

© 1991 Optical Society of America

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