Graduate School in Nonlinear Science

Sponsored by the Danish Research Academy

MIDIT                               OFD                           CATS
Modelling, Nonlinear Dynamics       Optics and Fluid Dynamics     Chaos and Turbulence Studies
and Irreversible Thermodynamics     Risø National Laboratory      Niels Bohr Institute and 
Technical University of Denmark     Building 128                  Department of Chemistry
Building 321                        P.O. Box 49                   University of Copenhagen 
DK-2800 Lyngby                      DK-4000 Roskilde              DK-2100 Copenhagen Ø
Denmark                             Denmark                       Denmark


by Wieslaw Krolikowski
Australian Photonics Cooperative Research Centre,
Laser Physics Centre,
Research School of Physical Science and Engineering
The Australian National University
Canberra ACT 0200, Australia

MIDIT-seminar 456

Monday July 5, 1999, 15.00 h
at MIDIT, IMM Building 305, room 027

Abstract: Slowly responding nonlinear media support formation of the so-called incoherent solitons which propagate as superposition of linear modes of the self-induced waveguide. In this talk I discuss individual properties of these solitons as well as their collisions. In particual I will show that the intensity profile of the incoherent solitons can be almost arbitrary and it is, in general, asymmetric. I will also show that collisions lead to transformation of the soliton shape. I will demonstrate this effect in experiments with photorefractive nonlinearity.