Numéro
J. Phys. IV France
Volume 135, October 2006
Page(s) 33 - 41
DOI http://dx.doi.org/10.1051/jp4:2006135006
Publié en ligne 23 novembre 2006
Neuvième colloque sur les lasers et l'optique quantique
C. Chardonnet et G. Millot
J. Phys. IV France 135 (2006) 33-41

DOI: 10.1051/jp4:2006135006

Incoherent solitons and condensation processes

A. Picozzi1, M. Haelterman2, S. Pitois1 and G. Millot1

1  Laboratoire de Physique de l'Université de Bourgogne, 9 Av. A. Savary, 21078 Dijon, France
2  50 avenue F.D. Roosevelt, Université Libre de Bruxelles, CP. 194/5, 1050 Bruxelles, Belgique


(Published online 23 November 2006)

Abstract
We study the nonlinear interaction of partially incoherent nonlinear optical waves. We show that, in spite of the incoherence of the waves, coherent phase effects may play a relevant role during the propagation, in contrast with the usual wave turbulence description of the interaction. These nonlinear phase effects may lead the system to unexpected processes of self-organization, such as condensation, or incoherent soliton generation in instantaneous response nonlinear media. Such self-organization processes may be characterized by a reduction of the non-equilibrium entropy, which violates the Boltzmann's H-theorem of entropy growth inherent to the wave turbulence theory.



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