Dispersion-related multimode instabilities and self-sustained oscillations in nonlinear counterpropagating waves.
We show that two linearly polarized counterpropagating waves in a Kerr nonlinear medium with linear dispersion can exhibit multimode temporal instability. We find the boundary of the unstable regime and demonstrate that the fully developed instability results in self-sustained oscillations and the onset of chaos.
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Kaplan
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