The complete modulational instability gain spectrum of nonlinear QPM gratings

Abstract

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.

4 pages, 3 figures expanded with more explanation and mathematical detail

References in corpus (4)

• Modulational instability in periodic quadratic nonlinear materials
• Engineering of spatial solitons in two-period QPM structures
• Accurate switching intensities and length scales in quasi-phase-matched materials
• Plane waves in periodic, quadratically nonlinear slab waveguides: stability and exact Fourier structure

Cited by in corpus (2)

• Modulation instability in high-order coupled nonlinear Schrödinger equations with saturable nonlinearities
• Modulational instability of optical beams in photorefractive media in the presence of two wave and four wave mixing effects