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arXiv · 1305.3378

Negative-frequency dispersive wave generation in quadratic media

Matteo Conforti·Niclas Westerberg·Fabio Baronio·Stefano Trillo·Daniele Faccio
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Abstract

We show that the extremely blue-shifted dispersive wave emitted in Kerr media owing to the coupling with the negative-frequency branch [Phys. Rev. Lett. {\bf 108}, 253901 (2012)] can be observed in quadratic media via second-harmonic generation. Not only such phenomenon is thus independent on the specific nonlinear mechanism, but it is shown to occur regardless of the fact that the process is pumped by a pulse which exhibits soliton-like features or, viceversa, undergoes wave-breaking. A simple unified formula gives the frequencies of the emitted dispersive waves in both cases.

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Matteo Conforti, Niclas Westerberg, Fabio Baronio, Stefano Trillo, Daniele Faccio. 2013-05-15. Negative-frequency dispersive wave generation in quadratic media. https://doi.org/10.1103/physreva.88.013829

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