Spatiotemporal toroidal waves from the transverse second-harmonic generation

Solomon M. Saltiel, Dragomir N. Neshev, Robert Fischer, Wieslaw Krolikowski*, Ady Arie, Yuri S. Kivshar

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    We study the second-harmonic generation via transversely matched interaction of two counterpropagating ultrashort pulses in X(2) photonic structures. We show that the emitted second-harmonic wave attains the form of spatially expanding toroid with the initial thickness given by the cross correlation of the pulses. We demonstrate the formation of such toroidal waves in crystals with random ferroelectric domains as well as in annularly poled nonlinear photonic structures.

    Original languageEnglish
    Pages (from-to)527-529
    Number of pages3
    JournalOptics Letters
    Volume33
    Issue number5
    DOIs
    Publication statusPublished - 1 Mar 2008

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