Nonlocal stabilization of nonlinear beams in a self-focusing atomic vapor
arXiv:physics/0612200 · doi:10.1103/PhysRevLett.98.263902
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.
arXiv comment3 figures
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