Relaxation-induced stabilisation of optical pulsed vortex beams in media with a composite cubic-quintic nonlinearity

摘要

The problem of the generation of stable (quasi-stable) 3+1D light bullets in nonlinear media is addressed. We consider a medium with a two-component relaxing cubic nonlinearity, and non-relaxing quintic one. It is shown that a special adjustment of the pulse duration and the parameters of the two-component relaxing nonlinearity enables one not only to suppress distortions of the temporal pulse envelope and self-induced frequency shift, but to suppress a destructive effect of the azimuthal instability of vortex pulsed beams as well.View full textDownload full textKeywordssingular light beams, relaxing nonlinearity, Raman effectRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500340.2011.569858