Spatial optical solitons
Wieslaw Krolikowski
Laser Physics Centre,
Research School of Physical Sciences and Engineering,
Australian National University,
Canberra ACT 0200,
Australia
Abstract:
Propagation of the finite-size optical beam is accompanied by its
spreading due to diffraction.
Sometimes diffraction can be eliminated via the nonlinear interaction
of the beam and the material. When this occurs the beam propagates
without changing its shape forming spatial optical soliton. Great
variety of solitons and soliton-related effects have been studied
theoretically and observed experimentally using various nonlinear
physical effects and materials. Spatial solitons appear to be very
robust, particle-like objects exhibiting interesting collisional
properties. In particular, they may spiral around each other, annihilate
or give birth to new solitons. They can also exist in form of composite
objects consisting of few mutually incoherent components ("light
molecules") creating different optical patterns such as multipole-vector
solitons.
In this talk I will discuss the basic concept of the spatial soliton,
review various types of solitons, their individual properties and their
interactions.