Phase transitions of nonlinear waves in quadratic waveguide arrays

Frank Setzpfandt*, Andrey A. Sukhorukov, Dragomir N. Neshev, Roland Schiek, Yuri S. Kivshar, Thomas Pertsch

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)


    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.

    Original languageEnglish
    Article number233905
    JournalPhysical Review Letters
    Issue number23
    Publication statusPublished - 1 Dec 2010


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