Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.104.133901
Title: Speckle instability: Coherent effects in nonlinear disordered media
Authors: Grémaud, B. 
Wellens, T.
Issue Date: 29-Mar-2010
Citation: Grémaud, B., Wellens, T. (2010-03-29). Speckle instability: Coherent effects in nonlinear disordered media. Physical Review Letters 104 (13) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.104.133901
Abstract: We numerically investigate the properties of speckle patterns formed by nonlinear point scatterers. We show that, in the weak localization regime, dynamical instability appears, eventually leading to chaotic behavior of the system. Analyzing the statistical properties of the instability thresholds for different values of the system size and disorder strength, a scaling law is emphasized. The later is found to also govern the smallest decay rate of the associated linear system, i.e., the "best" cavity realized by the scatterers, putting thus forward the crucial importance of interference effects. This is also underlined by the fact that coherent backscattering is still observed even in the chaotic regime. © 2010 The American Physical Society.
Source Title: Physical Review Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/115941
ISSN: 00319007
DOI: 10.1103/PhysRevLett.104.133901
Appears in Collections:Staff Publications

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