Physics – Condensed Matter – Disordered Systems and Neural Networks
RevTeX, 15 pages (including 5 figures), accepted for publication in Phys. Rev. E
We consider the multiple scattering of a scalar wave in a disordered medium with a weak nonlinearity of Kerr type. The perturbation theory, developed to calculate the temporal autocorrelation function of scattered wave, fails at short correlation times. A self-consistent calculation shows that for nonlinearities exceeding a certain threshold value, the multiple-scattering speckle pattern becomes unstable and exhibits spontaneous fluctuations even in the absence of scatterer motion. The instability is due to a distributed feedback in the system "coherent wave + nonlinear disordered medium". The feedback is provided by the multiple scattering. The development of instability is independent of the sign of nonlinearity.
Skipetrov Sergey E.
Temporal fluctuations of waves in weakly nonlinear disordered media does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.If you have personal experience with Temporal fluctuations of waves in weakly nonlinear disordered media, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temporal fluctuations of waves in weakly nonlinear disordered media will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-119974