Abstract
We describe a nonlinear optical system that supports spiral pattern solutions in the field intensity. This new spatial structure is found to bifurcate above a secondary instability in the internally pumped optical parametric oscillator. The analytical predictions of threshold and spatial scale for the instability are supplemented by detailed numerical investigations of the formation of spiral patterns.
- Received 18 July 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.4506
©2000 American Physical Society
