One- and two-dimensional solitons in saturable media

Details One- and two-dimensional solitons in saturable media One- and two-dimensional solitons in saturable media

2001-03-13

arxiv.org/abs/nlin/0103014v1

Nonlinear Sciences

Pattern Formation and Solitons

Text latex file and four pdf files with figures. J. Opt. Soc. America B, in press

Scientific paper

10.1364/JOSAB.18.001356

Very narrow spatial bright solitons in (1+1)D and (2+1)D versions of cubic-quintic and full saturable models are studied, starting from the full system of the Maxwell's equations, rather than from the paraxial (NLS) approximation. For the solitons with both TE and TM polarizations, it is shown that there always exists a finite minimum width, and they cease to exist at a critical value of the propagation constant, at which their width diverges. Full similarity of the results obtained for both nonlinearities suggests that the same general conclusions apply to narrow solitons in any non-Kerr model.

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