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Proceedings Paper

Space-time properties of the enhanced backscattering from highly disordered media
Author(s): Katsuhiro Ishii
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Paper Abstract

The enhanced backscattering or weak localization of light in the laser light scattered multiply from highly disordered media has attracted a great deal of attention as a visual precursor of the Anderson localization. It is known that the constructive interference between the waves travelling along the time-forward and the time- reversed paths produces the intensity peak in the direction of retroreflection, depending on the polarization of scattering light, the particle size, the fraction of solution and so on' ). The remarkable spatial properties of the enhanced backscattering reflects on the temporal ones. It was experimentally shown that the temporal correlation function of backscattered light varies with the scattering angle depending on the polarization2'3). We investigate the dependence of the temporal correlation of the enhanced backscattered light on both the polarization of scattering light and the particle size of solution by considering its relation with the spatial properties. Investigations are conducted from the theoretical analysis based on the diffuse approximation, a Monte Calro simulation and an experiment. We demonstrate the remarkable spatial variation of the relaxation time depending on the direction of the polarization and the particle size.

Paper Details

Date Published: 1 September 1996
PDF: 2 pages
Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 277856 (1 September 1996); doi: 10.1117/12.2299069
Show Author Affiliations
Katsuhiro Ishii, Hokkaido Univ. (Japan)

Published in SPIE Proceedings Vol. 2778:
17th Congress of the International Commission for Optics: Optics for Science and New Technology
Joon-Sung Chang; Jai-Hyung Lee; ChangHee Nam, Editor(s)

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