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Conferences > NLGW > 1998 > NWE > NWE.20

Self-focusing and solitary waves in bulk media with χ(2) and χ(3) nonlinearity

Ole Bang, Yuri S. Kivshar, Alexander V. Buryak, Alfredo De Rossi, and Stefano Trillo

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Abstract

The basic theory of two-wave parametric solitons in materials with a pure quadratic (or χ(2)) nonlinearity is now well understood, and importantly, many of the results have been confirmed experimentally [1]. In particular, in bulk media, families of stable spatial solitons exist above a certain threshold power [2]. Their excitation from input Gaussian beams has been confirmed both numerically [3] and experimentally [4]. In fact self-focusing, leading to a catastrophic collapse, cannot occur in χ(2) media [5].

© 1998 Optical Society of America

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