Exploiting breakdown of the similarity relation for diffuse light transport: simultaneous retrieval of scattering anisotropy and diffusion constant

Year: 2013

Authors: Svensson T., Savo R., Alerstam E., Vynck E., Burresi M., Wiersma D.

Autors Affiliation: European Laboratory for Non-linear Spectroscopy, University of Florence, Via Nello Carrara 1, Sesto Fiorentino 50019, Italy;
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA;
Institut Langevin, ESPCI ParisTech, 1 rue Jussieu, Paris 75005, France;
Istituto Nazionale di Ottica (CNR-INO), Largo Fermi 6, Firenze (FI) 50125, Italy

Abstract: As manifested in the similarity relation of diffuse light transport, it is difficult to assess single scattering characteristics from multiply scattered light. We take advantage of the limited validity of the diffusion approximation of light transport and demonstrate, experimentally and numerically, that even deep into the multiple scattering regime, time-resolved detection of transmitted light allows simultaneous assessment of both single scattering anisotropy and scattering mean free path, and therefore also macroscopic parameters like the diffusion constant and the transport mean free path. This is achieved via careful assessment of early light and matching against Monte Carlo simulations of radiative transfer. (c) 2013 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 38 (4)      Pages from: 437  to: 439

More Information: The authors acknowledge support from the Swedish Research Council, the European Network of Excellence on Nanophotonics for Energy Efficieny, and the ERC-Photbot grant.
KeyWords: Diffuse light; Diffusion approximations; Diffusion constant; Light transport; Macroscopic parameters; Mean free path; Monte Carlo Simulation; Multiply scattered light; Scattering anisotropy; Similarity relations; Single scattering; Time-resolved detection; Transmitted light; Transport mean free path, Anisotropy; Diffusion; Light transmission; Monte Carlo methods; Scattering
DOI: 10.1364/OL.38.000437

Citations: 13
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