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arXiv · 1805.07985

Self-trapped pulsed beams with finite power in pure cubic Kerr media excited by time-diffracting, space-time beams

Miguel A. Porras
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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.

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Miguel A. Porras. 2018-11-02. Self-trapped pulsed beams with finite power in pure cubic Kerr media excited by time-diffracting, space-time beams. https://doi.org/10.1364/oe.26.019606

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