Enhanced mesoscopic correlations in dynamic speckle patterns

Details Enhanced mesoscopic correlations in dynamic speckle patterns Enhanced mesoscopic correlations in dynamic speckle patterns

2004-06-10

arxiv.org/abs/cond-mat/0406245v1

Phys. Rev. Lett. 93, 233901 (2004)

Physics

Condensed Matter

Disordered Systems and Neural Networks

RevTeX, 4 pages

Scientific paper

10.1103/PhysRevLett.93.233901

We study the temporal evolution of speckle patterns in transmission of short wave pulses through a disordered waveguide. In the diffuse regime, the short-range spatial structure of speckles is the same as for continuous wave (cw) illumination, whereas the long-range correlation between distant speckle spots grows linearly with time and can exceed its cw value. We discuss the physical origin of this phenomenon, compare our results to recent microwave experiments, and suggest that a similar linear growth with time should also be characteristic for other mesoscopic interference phenomena.

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