Experimental observation of speckle instability in Kerr random media

  title={Experimental observation of speckle instability in Kerr random media},
  author={Patrick Sebbah and Umberto Bortolozzo and S. Residori},
  journal={CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference},
  • P. SebbahU. BortolozzoS. Residori
  • Published 14 June 2009
  • Physics, Mathematics
  • CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
Large intensity fluctuations of light diffusing through random media originates from the interference of the multiply scattered waves. The resulting speckle pattern can be viewed as a fingerprint of the disorder configuration of the medium and therefore is highly sensitive to scatterer motion. In the presence of a non linearity, the speckle may become instable as a result of the positive feedback provided by the scattering medium, even in absence of scatterer motion. 

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