Interaction of spatial photorefractive solitons

W. Królikowski, C. Denz, A. Stepken, M. Saffman, B. Luther-Davies

    Research output: Contribution to journalJournal articleResearchpeer-review


    We present a review of our recent theoretical and experimental results on the interaction of two-dimensional solitary beams in photorefractive SBN crystals. We show that the collision of coherent solitons may result in energy exchange, fusion of the interacting solitons, the birth of a new solitary beam or the complete annihilation of some of them, depending on the relative phase of the interacting beams. In the case of mutually incoherent solitons, we show that the photorefractive nonlinearity leads to an anomalous interaction between solitons. Theoretical and experimental results reveal that a soliton pair may experience both attractive and repulsive forces; depending on their mutual separation. We also show that strong attraction leads to periodic collision or helical motion of solitons depending on initial conditions.
    Original languageEnglish
    JournalQuantum and semiclassical optics (Print)
    Issue number6
    Pages (from-to)823-837
    Publication statusPublished - 1998

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