Two-dimensional optical lattice solitons

    Authors

    N. K. Efremidis; J. Hudock; D. N. Christodoulides; J. W. Fleischer; O. Cohen;M. Segev

    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    DISCRETE SOLITONS; ARRAYS; THRESHOLDS; BREATHERS; Physics, Multidisciplinary

    Abstract

    We study various families of two-dimensional discrete or lattice solitons, and show that they are possible only when their power level exceeds a critical threshold. In addition, we show that gap-lattice solitons exist only when the lattice possesses a complete 2D band gap. Our results suggest that these conditions are universally valid, irrespective of the nature of the nonlinearity or the specific structure of the index lattice. The analysis explains fundamental aspects of behavior of two-dimensional discrete solitons that have been very recently observed in photosensitive optical crystals.

    Journal Title

    Physical Review Letters

    Volume

    91

    Issue/Number

    21

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000186757000026

    ISSN

    0031-9007

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