The complete modulational instability gain spectrum of nonlinear QPM gratings
classification
⚛️ physics.optics
keywords
gainnonlinearcompletegratingsinstabilitymodulationalspectrumanalytically
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We consider plane waves propagating in quadratic nonlinear slab waveguides with nonlinear quasi-phase-matching gratings. We predict analytically and verify numerically the complete gain spectrum for transverse modulational instability, including hitherto undescribed higher order gain bands.
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