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Optical Gap Solitons in Nonresonant Quadratic Media

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Abstract

It has been shown that quadratic nonlinearities can support spatial optical solitons1 and also different types of gap solitons 4in periodic Bragg gratings with a quadratic [or χ2] nonlinear response2. Importantly, when an input electromagnetic wave E at frequency ω is launched into a noncentrosymmetric material, it generates also a quasi-static electric field (or dc field) at frequency zero.

© 1999 Optical Society of America

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