Mesoscopic Speckle

Details Mesoscopic Speckle Mesoscopic Speckle

2009-04-13

arxiv.org/abs/0904.1908v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We have measured the local and global statistics of singularity velocity, v, and have related these through the spatial correlation function of v. The distribution of v is a mixture of a mesoscopic distribution of global change in the speckle pattern and the distribution for v for Gaussian random fields. When v is normalized by the standard deviation of the fractional intensity change, probability distributions and correlation function of v approach those for random Gaussian fields. These results are directly analogous to the statistics of transmitted intensity normalized by the total transmission and provide a unified framework for understanding statistics of speckle evolution and intensity.

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