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

O.L. Muskens, T. van der Beek, Aart Lagendijk

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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
Original languageUndefined
Pages (from-to)035106
Number of pages8
JournalPhysical review B: Condensed matter and materials physics
Issue number3
Publication statusPublished - 2011


  • IR-78076

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