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Pseudospectral time domain simulations of multiple light scattering in three‐dimensional macroscopic random media
Author(s) -
Tseng Snow H.,
Taflove Allen,
Maitland Duncan,
Backman Vadim
Publication year - 2006
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2005rs003408
Subject(s) - statistical physics , scattering , domain (mathematical analysis) , physics , light scattering , time domain , optics , computational physics , mathematics , computer science , mathematical analysis , computer vision
We report a full‐vector, three‐dimensional, numerical solution of Maxwell's equations for optical propagation within, and scattering by, a random medium of macroscopic dimensions. The total scattering cross section is determined using the pseudospectral time domain technique. Specific results reported in this paper indicate that multiply scattered light also contains information that can be extracted by the proposed cross‐correlation analysis. On a broader perspective, our results demonstrate the feasibility of accurately determining the optical characteristics of arbitrary, macroscopic random media, including geometries with continuous variations of refractive index. Specifically, our results point toward the new possibilities of tissue optics; by numerically solving Maxwell's equations, the optical properties of tissue structures can be determined unambiguously.