Open AccessObservation of discrete quadratic surface solitons
Author(s) -
Georgios A. Siviloglou,
Konstantinos G. Makris,
Robert Iwanow,
Roland Schiek,
Demetrios N. Christodoulides,
George I. Stegeman,
Yoo-Hong Min,
W. Sohler
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.005508
Subject(s) - lithium niobate , optics , quadratic equation , nonlinear system , phase matching , physics , surface (topology) , nonlinear optics , lattice (music) , soliton , phase (matter) , quantum mechanics , mathematics , geometry , acoustics , laser
We report the first observation of discrete quadratic surface solitons in self-focusing and defocusing periodically poled lithium niobate waveguide arrays. By operating on either side of the phase-matching condition and using the cascading nonlinearity, both in-phase and staggered discrete surface solitons were observed. This represents the first experimental demonstration of staggered/gap surface solitons at the interface of a semi-infinite nonlinear lattice. The experimental results were found to be in good agreement with theory.