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Nonlocal stabilization of nonlinear beams in a self-focusing atomic vapor

S. Skupin·M. Saffman·W. Krolikowski
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Abstract

We show that ballistic transport of optically excited atoms in an atomic vapor provides a nonlocal nonlinearity which stabilizes the propagation of vortex beams and higher order modes in the presence of a self-focusing nonlinearity. Numerical experiments demonstrate stable propagation of lowest and higher order vortices over a hundred diffraction lengths, before dissipation leads to decay of these structures.

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S. Skupin, M. Saffman, W. Krolikowski. 2006-12-20. Nonlocal stabilization of nonlinear beams in a self-focusing atomic vapor. https://doi.org/10.1103/physrevlett.98.263902

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