Escape angles in bulk chi((2)) soliton interactions

Steffen Kjær Johansen, Ole Bang, Mads Peter Sørensen

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    Abstract

    We develop a theory for nonplanar interaction between two identical type I spatial solitons propagating at opposite, but arbitrary transverse angles in quadratic nonlinear (or so-called chi((2))) bulk, media. We predict quantitatively the outwards escape angle, below which the solitons turn around and collide, and above which they continue to move-away from each other. For in-plane interaction, the theory allows prediction of the Outcome of a collision through the inwards escape angle, i.e., whether the solitons fuse or cross. We find an analytical expression determining the inwards escape angle using Gaussian approximations for the solitons. The theory is verified numerically.
    Original languageEnglish
    JournalPhysical Review E. Statistical, Nonlinear, and Soft Matter Physics
    Volume65
    Issue number2
    Pages (from-to)026601
    ISSN1063-651X
    DOIs
    Publication statusPublished - 2002

    Bibliographical note

    Copyright (2002) American Physical Society

    Keywords

    • QUADRATIC NONLINEAR MEDIA
    • COLLISIONS
    • INDUCED WAVE-GUIDES
    • BEAMS
    • INCOHERENT-LIGHT
    • SPATIAL SOLITONS

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