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Physics  2003 

The complete modulational instability gain spectrum of nonlinear QPM gratings

DOI: 10.1364/JOSAB.21.000617

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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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