X and Y waves in the spatiotemporal Kerr dynamics of a self-guided light beam

Details X and Y waves in the spatiotemporal Kerr dynamics of a self-guided light beam X and Y waves in the spatiotemporal Kerr dynamics of a self-guided light beam

2008-05-21

arxiv.org/abs/0805.3316v1

Physics

Optics

9 pages, 9 figures

Scientific paper

10.1016/j.optcom.2008.10.039

The nonlinear stage of development of the spatiotemporal instability of the monochromatic Townes beam in a medium with self-focusing nonlinearity and normal dispersion is studied by analytical and numerical means. Small perturbations to the self-guided light beam are found to grow into two giant, splitting Y pulses featuring shock fronts on opposite sides. Each shocking pulse amplifies a co-propagating X wave, or dispersion- and diffraction-free linear wave mode of the medium, with super-broad spectrum.

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