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Observation of transverse instabilities in optically-induced lattices

Neshev, Dragomir; Sukhorukov, Andrey A.; Kivshar, Yuri S.; Krolikowski, Wieslaw


We study experimentally the Bloch-wave instabilities in optically-induced lattices. We reveal two different instability scenarios associated with either the transverse modulational instability of a single Bloch wave, or the nonlinear inter-band coupling between different Bloch waves. These effects are compared with the transverse instability in homogeneous media, and it is shown that the periodic modulation of the refractive index greatly enhances the transverse instability.

CollectionsANU Research Publications
Date published: 2003-07-29
Type: Journal article
Source: Optics Letters
DOI: 10.1364/OL.29.000259


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