Filamentation processes and dynamical excitation of light condensates in optical media with competing nonlinearities

Abstract

We analyze both theoretically and by means of numerical simulations the phenomena of filamentation and dynamical formation of self-guided nonlinear waves in media featuring competing cubic and quintic nonlinearities. We provide a theoretical description of recent experiments in terms of a linear stability analysis supported with simulations, showing the possibility of experimental observation of the modulational instability suppression of intense light pulses travelling across such nonlinear media. We also show a novel mechanism of indirect excitation of {\em light condensates} by means of coalescence processes of nonlinear coherent structures produced by managed filamentation of high power laser beams.

6 pages, 4 figures

References in corpus (3)

• Turning light into a liquid via atomic coherence
• Observation of spontaneous self-channelling of light in air below the collapse threshold
• Non-quantum liquefaction of coherent gases

Cited by in corpus (4)

• Bose-Einstein condensation of light: General theory
• Dynamics of vortex-antivortex pairs and rarefaction pulses in liquid light
• Ultrasolitons: multistability and subcritical power threshold from higher-order Kerr terms
• Modulational instability windows in the nonlinear Schrödinger equation involving higher-order Kerr responses