Instabilities of waves in nonlinear disordered media

被引：51

作者：

Skipetrov, SE ^{[1
]}

Maynard, R ^{[1
]}

机构：

[1] Univ Grenoble 1, Lab Phys & Modelisat Milieux Condenses, CNRS, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.85.736

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：736 / 739

页数：4

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