Authors

A. Dogariu;R. Carminati

Comments

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Abbreviated Journal Title

Phys. Rep.-Rev. Sec. Phys. Lett.

Keywords

Random fields; Speckle; Coherence; Polarization; PARTIALLY POLARIZED-LIGHT; NEAR-FIELD; COHERENT BACKSCATTERING; MULTIPLE-SCATTERING; DISORDERED MEDIA; SPATIAL COHERENCE; INTENSITY; FLUCTUATIONS; MUTUAL POLARIZATION; RAYLEIGH-SCATTERING; WEAK-LOCALIZATION; Physics, Multidisciplinary

Abstract

We describe recent developments in the characterization of three-dimensional speckle fields produced by scattering of electromagnetic waves. In many practical situations the description of such fields requires approaches going beyond the Gaussian statistics approximation. Quantitative measures of spatial coherence and polarization can be defined from the field-field correlation matrix, known as the cross-spectral density matrix in coherence theory. The complex degree of mutual polarization provides a measure of the similarity between polarization states at two different points. The degree of spatial coherence describes spatial coherence and averages out the polarization properties. We discuss their behavior in speckle fields produced by multiple scattering in disordered materials. A number of non-universal properties arise, that are related to the internal microscopic structure of the scattering medium. Non-universality affects observables quantities, such as spatial correlations in speckle patterns measured in the near field of the medium surface, statistics of the local density of states or the depolarization of the exciting electromagnetic field due to scattering. Specific microscopic scales are necessary to describe the non-universal behaviors, that characterize the scale-dependent morphology of the scattering medium.

Journal Title

Physics Reports-Review Section of Physics Letters

Volume

559

Publication Date

1-1-2015

Document Type

Review

Language

English

First Page

1

Last Page

29

WOS Identifier

WOS:000349876800001

ISSN

0370-1573

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