Observation of transverse instabilities in optically induced lattices |
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| Authors: | Neshev Dragomir Sukhorukov Andrey A Kivshar Yuri S Krolikowski Wieslaw |
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| Affiliation: | Nonlinear Physics Group and Centre for Ultrahigh-bandwidth Devices for Optical Systems, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia. dnn124@rsphysse.anu.edu.au |
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| Abstract: | We study experimentally the Bloch-wave instabilities in optically induced photonic lattices. We reveal two different instability scenarios associated with either the transverse modulational instability of a single Bloch wave or the nonlinear interband coupling between different Bloch waves. We show that the transverse instability is greatly enhanced in the induced lattice in comparison with homogeneous media. |
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