Title :
Spiral waves supported by competing quadratic and cubic nonlinearities
Author_Institution :
Politecnico di Milano, Italy
Abstract :
Summary form only given. In this work we predict the existence of a novel class of optical spiral waves supported by the competition of quadratic and cubic nonlinearities in an optical cavity that differ from optical vortices and spiral structures previously found in nonlinear optics. These new structures are found in a mean-field model of a type-II frequency-degenerate optical parametric oscillator with an intracavity isotropic cubic medium, and bear a close connection to phase-locked spiral waves recently observed in a parametrically-forced chemical system.
Keywords :
Ginzburg-Landau theory; nonlinear optical susceptibility; optical parametric oscillators; spatiotemporal phenomena; Ginzburg-Landau equation; Maker-Terhune coefficients; competing nonlinearities; cubic nonlinearities; frequency-degenerate optical parametric oscillator; intracavity isotropic cubic medium; mean-field model; optical cavity; optical spiral waves; phase multistability; phase-locked spiral waves; quadratic nonlinearities; spatial-temporal structures; Optical parametric oscillators;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031215
