Interaction between multiple spatial solitons in the diffraction catastrophe region upon focusing a high-power laser beam in a nonlinear medium View Full Text


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Article Info

DATE

2001-04

AUTHORS

V. Yu. Osipov

ABSTRACT

When a high-power laser beam is focused in a nonlinear Kerr medium, beam self-diffraction by induced inhomogeneities of the refractive index is observed. A method for calculating the field amplitude and phase in the focal region with regard for self-diffraction by self-induced inhomogeneities is developed. Computer analysis of saturable Kerr media showed that the optical-field region with the least cross section of the focal pattern is followed by that of chaotically radiating “splashes” and long filaments. The latter radiate outward from the region of the caustic waist over long distances. They represent bright spatial solitons, which channel a significant portion of the primary beam energy. No less than 8–12 clear-cut solitons traveling in the positive z direction and moving apart in the transverse (x, y) plane are observed in the cross section. The field amplitude oscillates along each of the solitons. Various parameters of the saturable Kerr medium are taken into account. More... »

PAGES

442-449

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/1.1365469

DOI

http://dx.doi.org/10.1134/1.1365469

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1024065725


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