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Nonlinear unbalanced Bessel beams in the collapse of Gaussian beams arrested by nonlinear losses

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Abstract

Collapse of a Gaussian beam in self-focusing Kerr media arrested by nonlinear losses may lead to the spontaneous formation of a quasi-stationary nonlinear unbalanced Bessel beam with finite energy, which can propagate without significant distortion over tens of diffraction lengths, and without peak intensity attenuation while the beam power is drastically diminishing.

© 2008 Optical Society of America

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