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Angle dependence of the frequency correlation in random photonic media: diffusive regime and its breakdown near localization

Angle dependence of the frequency correlation in random photonic media: diffusive regime and its breakdown near localization
Angle dependence of the frequency correlation in random photonic media: diffusive regime and its breakdown near localization
The frequency correlations of light in complex photonic media are of interest as a tool for characterizing the dynamical aspects of light diffusion. We demonstrate here that the frequency correlation shows a pronounced angle dependence both in transmission and in reflection geometries. Using a broadband white-light supercontinuum, this angle dependence is characterized and explained theoretically by a combination of propagation effects outside the medium and coherent backscattering. We report a strong dependence of the coherent backscattering contribution on the scattering strength that cannot be explained by the diffusion theory. Our results indicate that coherent backscattering of the frequency correlation forms a sensitive probe for the breakdown of the diffusive regime near localization
035106-[9pp]
Muskens, O.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
van der Beek, T.
dc745ef9-66ae-494a-b464-27fcd27a740d
Lagendijk, A.
4434d7eb-fef3-479e-949b-58e3dc6259cf
Muskens, O.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
van der Beek, T.
dc745ef9-66ae-494a-b464-27fcd27a740d
Lagendijk, A.
4434d7eb-fef3-479e-949b-58e3dc6259cf

Muskens, O., van der Beek, T. and Lagendijk, A. (2011) Angle dependence of the frequency correlation in random photonic media: diffusive regime and its breakdown near localization. Physical Review B: Condensed Matter and Materials Physics, 84 (3), 035106-[9pp]. (doi:10.1103/PhysRevB.84.035106).

Record type: Article

Abstract

The frequency correlations of light in complex photonic media are of interest as a tool for characterizing the dynamical aspects of light diffusion. We demonstrate here that the frequency correlation shows a pronounced angle dependence both in transmission and in reflection geometries. Using a broadband white-light supercontinuum, this angle dependence is characterized and explained theoretically by a combination of propagation effects outside the medium and coherent backscattering. We report a strong dependence of the coherent backscattering contribution on the scattering strength that cannot be explained by the diffusion theory. Our results indicate that coherent backscattering of the frequency correlation forms a sensitive probe for the breakdown of the diffusive regime near localization

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Published date: July 2011
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 194869
URI: http://eprints.soton.ac.uk/id/eprint/194869
PURE UUID: b5af89cc-05ef-44b9-892a-d0901e94ddda
ORCID for O. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

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Date deposited: 12 Aug 2011 07:48
Last modified: 10 Dec 2019 01:40

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