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Phase transitions of nonlinear waves in quadratic waveguide arrays

Setzpfandt, Frank; Neshev, Dragomir; Schiek, Roland; Pertsch, Thomas; Sukhorukov, Andrey; Kivshar, Yuri


We study two-color parametric nonlinear modes in waveguide arrays with a quadratic nonlinear response. We predict theoretically and observe experimentally a new type of phase transition manifested in an abrupt power-controlled change of the mode structure from unstaggered to staggered, due to the interplay of localization and synchronization in parametrically driven discrete systems.

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.105.233905


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