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Opt Lett. 2004 Feb 1;29(3):259-61.

Observation of transverse instabilities in optically induced lattices.

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  • 1Nonlinear 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.


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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