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Proceedings Paper

Attenuation of a coherent field in a dense scattering medium
Author(s): Bernard Gelebart; David Ferrand; Hans Jurgen Schnorenberg; Sigrid Avrillier
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Paper Abstract

A collimated light beam propagating through a turbid medium can be strongly attenuated by both absorption and scattering. It is usually assumed that, in first approximation, the attenuation depends linearly on the thickness of the scattering medium and on the scatterers concentration. This law, based on the assumption that the scatterers are uncorrelated, is in good agreement with experimental measurements when the particles density is low. However, in a dense distribution of particles, it has been shown that corrections need to be introduced. In this paper, we relate some experimental results concerning coherent propagation in latex spheres suspensions in water. These results are obtained by the use of polarization analysis and show the deviation of the attenuation from the linear law in spheres concentration. A good agreement is obtained with the Keller propagation theory in dense media.

Paper Details

Date Published: 18 December 1995
PDF: 9 pages
Proc. SPIE 2626, Photon Propagation in Tissues, (18 December 1995); doi: 10.1117/12.228690
Show Author Affiliations
Bernard Gelebart, Univ. de Paris-Nord (France)
David Ferrand, Univ. de Paris-Nord (France)
Hans Jurgen Schnorenberg, Univ. de Paris-Nord (France)
Sigrid Avrillier, Univ. de Paris-Nord (France)

Published in SPIE Proceedings Vol. 2626:
Photon Propagation in Tissues
Britton Chance; David T. Delpy; Gerhard J. Mueller, Editor(s)

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