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Instabilities of waves in nonlinear disordered media

S. E. Skipetrov·R. Maynard
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Abstract

We develop a self-consistent theory of temporal fluctuations of a speckle pattern resulting from the multiple scattering of a coherent wave in a weakly nonlinear disordered medium. The speckle pattern is shown to become unstable if the nonlinearity exceeds a threshold value. The instability is due to a feedback provided by the multiple scattering and manifests itself in spontaneous fluctuations of the scattered intensity. The development of instability is independent of the sign of nonlinearity.

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BibTeXRIS

S. E. Skipetrov, R. Maynard. 2000-06-08. Instabilities of waves in nonlinear disordered media. https://doi.org/10.1103/physrevlett.85.736

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