Title :
Speckle instability in strongly scattering Kerr random media
Author :
Pacilli ; Sebbah, P. ; Vanneste
Author_Institution :
Lab. de Phys. de la Matiere Condensee, CNRS, Nice, France
Abstract :
Summary form only given. Using the Wave Automaton, a numerical tool we developed to describe the full dynamics of (scalar) waves in complex media, we simulate wave propagation in two dimensional quenched disordered media in the presence of a Kerr nonlinearity. Under suitable condition of disorder and nonlinear perturbation, we observe a speckle instability even in absence of scatterer motion, which results from the positive feedback provided by the scattering medium.
Keywords :
light scattering; nonlinear media; optical Kerr effect; optical feedback; random media; speckle; Anderson localization; Kerr nonlinearity; Wave Automaton; amplitude modulation; dimensional quenched disordered media; disorder configuration; highly scattering media; interference effects; large intensity fluctuations; localized modes; nonlinear feedback; nonlinear random media; periodic solution; speckle instability; strongly scattering Kerr random media; threshold value; wave propagation; Optical Kerr effect; Optical feedback; Optical scattering; Speckle;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031071
