Diffusion of temporal field correlation with selected applications

David A. Boas; Igor Victorovich Meglinski; L. Zemany; L. E. Campbell; Britton Chance; Arjun G. Yodh

doi:10.1117/12.231685

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9 February 1996 Diffusion of temporal field correlation with selected applications

David A. Boas; Igor Victorovich Meglinski; L. Zemany; L. E. Campbell; Britton Chance; Arjun G. Yodh

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Proceedings Volume 2732, CIS Selected Papers: Coherence-Domain Methods in Biomedical Optics; (1996) https://doi.org/10.1117/12.231685
Event: CIS Selected Papers: Coherence Domain Methods in Biomedical Optics, 1995, Saratov, Russian Federation

Abstract

We consider the transport of the electric field temporal autocorrelation in heterogeneous, fluctuating turbid media. Experiments are performed in strongly scattering media with spatially separated static and dynamic components, and low resolution `dynamical' images of such media are obtained using autocorrelation measurements of the emerging speckle fields taken along the sample surface. Our analysis, based on a diffusion approximation to the field correlation transport equation, reveals that the field correlation scatters from macroscopic dynamic heterogeneities within turbid media. Demonstrations using heterogeneous samples containing particles undergoing Brownian motion and shear flow are described.

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David A. Boas, Igor Victorovich Meglinski, L. Zemany, L. E. Campbell, Britton Chance, and Arjun G. Yodh "Diffusion of temporal field correlation with selected applications", Proc. SPIE 2732, CIS Selected Papers: Coherence-Domain Methods in Biomedical Optics, (9 February 1996); https://doi.org/10.1117/12.231685

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