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

Matuszewski, MichalRosberg, ChristianNeshev, DragomirMitchell, ArnanTrippenbach, MarekAustin, MKrolikowski, WieslawSukhorukov, AndreyKivshar, Yuri2009-05-282010-12-202009-05-282010-12-20Optics Express 14.1 (2006): 254-2591094-4087http://hdl.handle.net/10440/343http://digitalcollections.anu.edu.au/handle/10440/343We 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 LiNbO3 waveguide arrays.6 pages"OSA will grant the authors permission to deposit the publisher’s pdf from their Optics Express articles into the repository with the proper citation (reference number or journal /volume/page/year citation)." - from email received from Authorized Agent, The Optical Society, 27/05/10nonlinear optics, transverse effects inself-action effectsCrossover from self-defocusing to discrete trapping in nonlinear waveguide arrays2006-01-0910.1364/OPEX.14.0002542015-12-12