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Modulational instability and solitons in nonlocal media with competing nonlinearities

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Abstract

We investigate theoretically propagation and spatial localization of light in nonlocal media with competing nonlinearities. We show that the competing focusing and defocusing nonlinearities enable coexistence of dark or bright spatial solitons in the same medium by varying the intensity of the beam.

© 2012 Optical Society of America

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