Spectral and angular correlations in disordered wave guides

Eugene Kogan; Moshe Kaveh

doi:10.1016/0375-9601(92)90012-b

Spectral and angular correlations in disordered wave guides

Eugene Kogan
, Moshe Kaveh

Department of Physics - at Bar-Ilan University

University of Cambridge

Research output: Contribution to journal › Article › peer-review

Abstract

We study the intensity-intensity auto-correlation function of a disordered medium as a simultaneous function of the wave frequency change Δω, the change in incident wave vector Δq_a and the change in scattered wave vector Δq_b. For a restricted geometry such as a long narrow disordered wave guide, we find that the auto-correlation function C(Δω, Δq_a, Δq_b) decouples in the following way: C(Δω, Δq_a, Δq_b)=C₁(Δω)F(Δq_a)F(Δq_b)+C₂(Δω)[F(Δq_a)+F(Δq_b)], where C₁(Δω) and C₂(Δω) are the short-range and the long-range spectral auto-correlation functions, respectively, and F is a geometrical form factor. When the width of the wave guide becomes larger than its length the decoupling breaks down.

Original language	English
Pages (from-to)	493-496
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	162
Issue number	6
DOIs	https://doi.org/10.1016/0375-9601(92)90012-b
State	Published - 2 Mar 1992

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title = "Spectral and angular correlations in disordered wave guides",

abstract = "We study the intensity-intensity auto-correlation function of a disordered medium as a simultaneous function of the wave frequency change Δω, the change in incident wave vector Δqa and the change in scattered wave vector Δqb. For a restricted geometry such as a long narrow disordered wave guide, we find that the auto-correlation function C(Δω, Δqa, Δqb) decouples in the following way: C(Δω, Δqa, Δqb)=C1(Δω)F(Δqa)F(Δqb)+C2(Δω)[F(Δq a)+F(Δqb)], where C1(Δω) and C2(Δω) are the short-range and the long-range spectral auto-correlation functions, respectively, and F is a geometrical form factor. When the width of the wave guide becomes larger than its length the decoupling breaks down.",

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T1 - Spectral and angular correlations in disordered wave guides

AU - Kogan, Eugene

AU - Kaveh, Moshe

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N2 - We study the intensity-intensity auto-correlation function of a disordered medium as a simultaneous function of the wave frequency change Δω, the change in incident wave vector Δqa and the change in scattered wave vector Δqb. For a restricted geometry such as a long narrow disordered wave guide, we find that the auto-correlation function C(Δω, Δqa, Δqb) decouples in the following way: C(Δω, Δqa, Δqb)=C1(Δω)F(Δqa)F(Δqb)+C2(Δω)[F(Δq a)+F(Δqb)], where C1(Δω) and C2(Δω) are the short-range and the long-range spectral auto-correlation functions, respectively, and F is a geometrical form factor. When the width of the wave guide becomes larger than its length the decoupling breaks down.

AB - We study the intensity-intensity auto-correlation function of a disordered medium as a simultaneous function of the wave frequency change Δω, the change in incident wave vector Δqa and the change in scattered wave vector Δqb. For a restricted geometry such as a long narrow disordered wave guide, we find that the auto-correlation function C(Δω, Δqa, Δqb) decouples in the following way: C(Δω, Δqa, Δqb)=C1(Δω)F(Δqa)F(Δqb)+C2(Δω)[F(Δq a)+F(Δqb)], where C1(Δω) and C2(Δω) are the short-range and the long-range spectral auto-correlation functions, respectively, and F is a geometrical form factor. When the width of the wave guide becomes larger than its length the decoupling breaks down.

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JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 6

ER -

Spectral and angular correlations in disordered wave guides

Abstract

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