Time-resolved experiments on light diffusion in anisotropic random media

Year: 2000

Authors: Wiersma D., Muzzi A., Colocci M., Righini R.

Autors Affiliation: European Laboratory for Non-Linear Spectroscopy, Instituto Nazionale per la Fisica della Materia, Largo Enrico Fermi 2 (Arcetri), 50125 Florence, Italy

Abstract: Multiple light scattering in isotropic and anisotropic media is studied experimentally with an optical gating technique, as commonly used in fluorescence spectroscopy. The experimental setup permits an accurate analysis of the propagation of a short light pulse through disordered or partially ordered media. The diffusion constant of some isotropic systems is reported, and the anisotropy in the diffusion constant for light diffusion through liquid crystals is observed. For the time-resolved data, good agreement with diffusion theory is found in all cases, including the liquid crystal in the nematic phase.

Journal/Review: PHYSICAL REVIEW E

Volume: 62 (5)      Pages from: 6681  to: 6687

KeyWords: Anisotropy; Dielectric materials; Diffraction gratings; Diffusion; Electromagnetic dispersion; Hall effect; Magnetoresistance; Nematic liquid crystals; Refractive index; Spectroscopy, Andertonic localization; Fluorescence spectroscopy; Isotropy; Mesoscopic systems, Light scattering; Coherent backscattering
DOI: 10.1103/PhysRevE.62.6681

Citations: 26
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