Mesoscopic Speckle

Abstract

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.

References in corpus (4)

• Localization of ultrasound in a three-dimensional elastic network
• Statistical Signatures of Photon Localization
• Spatial field correlation, the building block of mesoscopic fluctuations
• Statistics of diffusive and localized fields in the vortex core

Cited by in corpus (5)

• Transmission statistics and focusing in single disordered samples
• Microwave conductance in random waveguides in the crossover to Anderson localization and single parameter scaling
• Statistics and control of waves in disordered media
• Phase Singularity Diffusion
• Superuniversal Statistics with Topological Origins for non-Hermitian Scattering Singularities