Self-trapped pulsed beams with finite power in pure cubic Kerr media excited by time-diffracting, space-time beams
arXiv:1805.07985 · doi:10.1364/OE.26.019606
Abstract
We study the nonlinear propagation of diffraction-free, space-time wave packets, also called time-diffracting beams because their spatiotemporal structure reproduces diffraction in time. We report on the spontaneous formation of propagation-invariant, spatiotemporally compressed pulsed beams carrying finite power from exciting time-diffracting Gaussian beams in media with cubic Kerr nonlinearity at powers below the critical power for collapse, and also with other collapse-arresting nonlinearities above the critical power. Their attraction property makes the experimental observation of the self-trapped pulsed beams in cubic Kerr media feasible. The structure in the temporal and transversal dimensions of the self-trapped wave packets is shown to be the same as the structure in the axial and transversal dimensions of the self-focusing and (arrested) collapse of monochromatic Gaussian beams.
6 pages, 3 figures
References in corpus (5)
- Diffraction-free space-time beams
- Airy wave packets accelerating in space-time
- Gaussian beams diffracting in time
- Abruptly Focusing and Defocusing Needles of Light and Closed-Form Electromagnetic Wavepackets
- Time-diffracting beams: On their nature, diffraction-free propagation as needles of light, and nonlinear generation