Crossover from self-defocusing to discrete trapping in nonlinear waveguide arrays

Details Crossover from self-defocusing to discrete trapping in nonlinear waveguide arrays Crossover from self-defocusing to discrete trapping in nonlinear waveguide arrays

2005-11-25

arxiv.org/abs/nlin/0511053v1

Opt. Express 14, 254-259 (2006), http://www.opticsinfobase.org/abstract.cfm?URI=oe-14-1-254

Nonlinear Sciences

Pattern Formation and Solitons

6 pages, 4 figures

Scientific paper

10.1364/OPEX.14.000254

We predict a sharp crossover from nonlinear self-defocusing to discrete
self-trapping of a narrow Gaussian beam with the increase of the refractive
index contrast in a periodic photonic lattice. We demonstrate experimentally
nonlinear discrete localization of light with defocusing nonlinearity by single
site excitation in LiNbO$_3$ waveguide arrays.

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