Intensity correlation functions and fluctuations in light scattered from a random medium

Stephen, Michael J.; Cwilich, Gabriel

doi:10.1103/physrevlett.59.285

Cited by 221 publications

(130 citation statements)

References 9 publications

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“…1 Several authors have considered this contribution in a reflection geometry. 3,12,[27][28][29][30] The angular C (2) correlation is inversely proportional to the illumination area, and is expected to be negligibly small for the geometry of our experiment. In contrast, the near-field correlation in reflection is a local effect on a length scale of order , which does not vanish for plane-wave illumination.…”

Section: Discussionmentioning

confidence: 99%

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

2011

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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.

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Section: Discussionmentioning

confidence: 99%

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

2011

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“…Substituting eq. ( 17) in this expression leads after some algebra to the following result, assuming Bi = 0 and dS = 8:…”

Section: Enhanced Backscatteringmentioning

confidence: 99%

Influence of internal reflection on diffusive transport in strongly scattering media

1989

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“…Defining a correlation length, δr, as the first zero of C 1 gives δr = π/k = λ/2. The intensity is correlated far beyond δr as a result of scattering within the medium [2,3,4,5,6,7] so that intensity values in remote speckle spots are not statistically independent. This gives rise to two additional contributions to C, which can therefore be expressed as, C = C 1 + C 2 + C 3 [3,8], and leads to greatly enhanced mesoscopic fluctuations [9].…”

mentioning

confidence: 99%

Spatial-Field Correlation: The Building Block of Mesoscopic Fluctuations

Sebbah

Genack

et al. 2002

Phys. Rev. Lett.

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The absence of self averaging in mesoscopic systems is a consequence of long-range intensity correlation. Microwave measurements suggest and diagrammatic calculations confirm that the correlation function of the normalized intensity with displacement of the source and detector, ∆R and ∆r, respectively, can be expressed as the sum of three terms, with distinctive spatial dependences. Each term involves only the sum or the product of the square of the field correlation function, F ≡ F 2 E . The leading-order term is the product, the next term is proportional to the sum. The third term is proportional to [F (∆R)F (∆r) + [F (∆R) + F (∆r)] + 1].

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Intensity correlation functions and fluctuations in light scattered from a random medium

Cited by 221 publications

References 9 publications

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

Influence of internal reflection on diffusive transport in strongly scattering media

Spatial-Field Correlation: The Building Block of Mesoscopic Fluctuations

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