Optical Gap Solitons in Nonresonant Quadratic Media

Abstract

We demonstrate an important role of the process of optical rectification in the theory of nonlinear wave propagation in quadratically nonlinear [or ${\chi }^{(2)}$ ] periodic optical media. We derive a novel physical model for gap solitons in ${\chi }^{(2)}$ nonlinear Bragg gratings.

3.5 pages, double-column, no figures; submitted to Physical Review E

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