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Contribution of third-harmonic and negative-frequency polarization fields to self-phase modulation in nonlinear media

机译:非线性介质中三次谐波和负频率极化场对自相位调制的贡献

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摘要

We study the influence of third-harmonic generation (THG) and negative-frequency polarization terms in the self-phase modulation (SPM) of short and intense pulses in Kerr media. We find that THG induces additional symmetric lobes in the SPM process. The amplitude of these new sidebands are greatly enhanced by the contributions of the negative-frequency Kerr (NFK) term and the shock operator. We compare our theoretical predictions based on the analytical nonlinear phase with simulations carried out by using the full unidirectional pulse propagation equation (UPPE). (C) 2015 Optical Society of America
机译:我们研究了克尔介质中短脉冲和强脉冲的自相位调制(SPM)中的三次谐波生成(THG)和负频极化项的影响。我们发现THG在SPM过程中诱导了其他对称波瓣。负频率Kerr(NFK)项和电击算子的作用大大提高了这些新边带的幅度。我们将基于解析非线性相位的理论预测与使用完整单向脉冲传播方程(UPPE)进行的仿真进行比较。 (C)2015年美国眼镜学会

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