Dynamics of hexagonal patterns in a self-focusing Kerr cavity.
In this paper we analyze in detail the secondary bifurcations of stationary hexagonal patterns in a prototype model of nonlinear optics. Hexagonal pattern solutions with all allowed wave numbers are computed and their linear stability is studied by means of a Bloch analysis. Depending on the wave number of the selected pattern we predict and numerically observe phase instabilities, amplitude instabilities, both stationary and oscillatory, and oscillatory finite wavelength bifurcations. The results presented here illustrate a typical bifurcation scenario for patterns with different wave numbers in self-focusing systems.
Gomila
Damià
D
Instituto de Física Interdisciplinar y Systemas Complejos (IFISC, CSIC-UIB), Campus Universitat Illes Balears, E-07122 Palma de Mallorca, Spain. damia@imedea.uib.es
Colet
Pere
P