Hexagonal optical patterns in anisotropic non-linear media

A.V. Mamaev, M. Saffman

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    We present experimental observations of hexagonal patterns in strongly anisotropic non-linear optical media. Close to threshold rolls are observed. As the non-linearity is increased a transition from rolls to hexagons, leading finally to a pure hexagonal state, is observed. A mean-field model, in agreement with experiments, shows that the anisotropy locks the far-field orientation of the hexagons, while leaving their rotational symmetry undisturbed.
    Original languageEnglish
    JournalEurophysics Letters
    Volume34
    Issue number9
    Pages (from-to)669-674
    ISSN0295-5075
    DOIs
    Publication statusPublished - 1996

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