Graduate School in Nonlinear Science
Sponsored by the Danish Research Academy
Pattern Formation and Control in Nonlinear Optical Systems.
by J.V. Moloney
Arizona Center for Mathematical Sciences
University of Arizona, Tucson
Thursday, June 18, 1998 14:15 h
at MIDIT, Building 305 room 027
MIDIT-seminar No. 408
Abstract: Patterns form spontaneously immediately past
the first threshold in wide aperture lasers. Near the Hopf bifurcation
in these spatially extended systems, the patterns can be described by
universal order parameter equations.
Criteria for their stability can be derived. In wide aperture semiconductors
lasers, the solutions are nowhere stable.
We will also discuss a novel spatial/spectral filtering control scheme
which is capable of stabilizing and steering the laser output.