Spatio-temporal speckle correlations for imaging in turbid media

Details Spatio-temporal speckle correlations for imaging in turbid media Spatio-temporal speckle correlations for imaging in turbid media

2001-03-22

arxiv.org/abs/cond-mat/0103462v1

Physics

Condensed Matter

Soft Condensed Matter

RevTeX, 4 pages, a modified version is published in "Waves and Imaging Through Complex Media", ed. by P. Sebbah (Kluwer Academ

Scientific paper

We discuss the far-field spatio-temporal cross-correlations of waves multiple-scattered in a turbid medium in which is embedded a hidden heterogeneous region (inclusion) characterized by a distinct scatterer dynamics (as compared to the rest of the medium). We show that the spatio-temporal correlation is affected by the inclusion which suggests a new method of imaging in turbid media. Our results allow qualitative interpretation in terms of diffraction theory: the cross-correlation of scattered waves behaves similarly to the intensity of a wave diffracted by an aperture.

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