Coherent backscattering effect on wave dynamics in a random medium

Details Coherent backscattering effect on wave dynamics in a random medium Coherent backscattering effect on wave dynamics in a random medium

2000-04-04

arxiv.org/abs/cond-mat/0004049v1

Europhys. Lett. 52, 518 (2000)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 2 figures

Scientific paper

10.1209/epl/i2000-00468-4

A dynamical effect of coherent backscattering is predicted theoretically and supported by computer simulations: The distribution of single-mode delay times of waves reflected by a disordered waveguide depends on whether the incident and detected modes are the same or not. The change amounts to a rescaling of the distribution by a factor close to $\sqrt{2}$. This effect appears only if the length of the waveguide exceeds the localization length; there is no effect of coherent backscattering on the delay times in the diffusive regime.

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