Diffusive light transport in semitransparent media

Year: 2016

Authors: Pattelli L., Mazzamuto G., Wiersma D., Toninelli C.

Autors Affiliation: European Laboratory for Non-linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Florence, Italy; Istituto Nazionale di Ottica (CNR-INO), Via Carrara 1, 50019 Sesto Fiorentino, Florence, Italy; Department of Physics, Università di Firenze, 50019 Sesto Fiorentino, Florence, Italy; QSTAR, Largo Enrico Fermi 2, 50125 Florence, Italy

Abstract: It is common knowledge that diffusion theory cannot describe light propagation in semitransparent media, i.e., media with a low optical thickness. However, even in an optically thin slab, late-time transport will be eventually determined by a multiple scattering process whose characteristics are still largely unexplored. We numerically demonstrate that, even for an optical thickness as low as 1, after a short transient, propagation along the slab plane becomes diffusive. Nonetheless, we show that such a diffusion process is governed by modified statistical distributions which result from a highly nontrivial interplay with boundary conditions.

Journal/Review: PHYSICAL REVIEW A

Volume: 94 (4)      Pages from: 043846-1  to: 043846-6

KeyWords: diffusion; Monte Carlo; turbid media
DOI: 10.1103/PhysRevA.94.043846

Citations: 6
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