Conical diffraction and gap solitons in honeycomb photonic lattices

    Authors

    O. Peleg; G. Bartal; B. Freedman; O. Manela; M. Segev;D. N. Christodoulides

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    Physics, Multidisciplinary

    Abstract

    We study wave dynamics in honeycomb photonic lattices, and demonstrate the unique phenomenon of conical diffraction around the singular diabolical (zero-effective-mass) points connecting the first and second bands. This constitutes the prediction and first experimental observation of conical diffraction arising solely from a periodic potential. It is also the first study on k space singularities in photonic lattices. In addition, we demonstrate "honeycomb gap solitons" residing in the gap between the second and the third bands, reflecting the special properties of these lattices.

    Journal Title

    Physical Review Letters

    Volume

    98

    Issue/Number

    10

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000244792400021

    ISSN

    0031-9007

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