Spatio-temporal speckle correlations for imaging in turbid media
Abstract
Description
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.
RevTeX, 4 pages, a modified version is published in "Waves and Imaging Through Complex Media", ed. by P. Sebbah (Kluwer Academic Publishers, Dordrecht, 2001)
RevTeX, 4 pages, a modified version is published in "Waves and Imaging Through Complex Media", ed. by P. Sebbah (Kluwer Academic Publishers, Dordrecht, 2001)