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Phys Rev Lett. 2008 Jan 25;100(3):030402. Epub 2008 Jan 23.

Optical solitons in PT periodic potentials.

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Department of Mathematics, Florida State University, Tallahassee, FL 32306-4510, USA.


We investigate the effect of nonlinearity on beam dynamics in parity-time (PT) symmetric potentials. We show that a novel class of one- and two-dimensional nonlinear self-trapped modes can exist in optical PT synthetic lattices. These solitons are shown to be stable over a wide range of potential parameters. The transverse power flow within these complex solitons is also examined.

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