Department of Physics Papers

Document Type

Journal Article

Date of this Version

4-1995

Publication Source

Physical Review E

Volume

51

Issue

4

Start Page

3350

Last Page

3358

DOI

10.1103/PhysRevE.51.3350

Abstract

Random walk computer simulations are reported for the electric field autocorrelation of photons transmitted through multiple-scattering slabs. The results are used as a benchmark for judging the accuracy of competing theories of diffusing-wave spectroscopy (DWS), and also for distinguishing between errors introduced from the approximation of diffusive photon transport and from the continuum approximation that the total square wave-vector transfer of a transmitted photon is proportional to its path length in the material. An important conclusion is that these errors partially cancel, giving accuracies on the order of a few percent for typical experimental situations. Detailed comparisons are made as a function of optical thickness, boundary reflectivity, as well as scattering anisotropy; guidelines are generated for optimizing the analysis of actual DWS data in terms of the dynamics of individual scattering sites.

Copyright/Permission Statement

© 1995 American Physical Society. You van view the original article at: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.51.3350

Comments

At the time of publication, author Douglas J. Durian was affiliated with University of California, Los Angeles. Currently, he is a faculty member at the Physics Department at the University of Pennsylvania.

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Date Posted:10 October 2017

This document has been peer reviewed.