title: Analytical solution for photorefractive screening solitons
abstract: We study formation and interaction of one-dimensional screening solitons in a photorefractive medium with sublinear dependence of the photoconductivity on light intensity. We find an exact analytical solution to the corresponding nonlinear Schrodinger equation. We show that these solitons are stable in propagation and their interaction is generic for solitons of saturable nonlinearity. In particular, they may fuse or "give birth" to new solitons upon collision.
authors.affiliation: Australian Photonics Cooperative Research Centre, Laser Physics Centre, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, Australia.
authors.initials: W
authors.lastname: Krolikowski
authors.initials: B
authors.lastname: Luther-Davies
authors.initials: G
authors.lastname: McCarthy
authors.initials: A
authors.lastname: Bledowski