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arXiv 2007.05087nlin.PSphysics.optics
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饱和非线性介质中色散shock waves的形成

Formation of dispersive shock waves in a saturable nonlinear medium

Sergey K. Ivanov, Jules-Elemir Suchorski, Anatoly M. Kamchatnov, Mathieu Isoard, Nicolas Pavloff

摘要:

我们使用基于Whitham平均法的Gurevich-Pitaevskii方法研究了在可饱和非线性介质中传播的强光脉冲中色散激波的形成。虽然在这种情况下,Whitham调制方程不能对角化,但通过分析这些方程在激波边界处的性质,可以导出色散激波的主要特征。我们的方法概括了以前的分析阶梯状的初始强度分布到一个更现实的类型的初始光脉冲,并使之有可能确定,在实验的兴趣设置,可测量的量,如破波时间或位置和光强度的冲击边缘的值。

英文摘要:

We use the Gurevich-Pitaevskii approach based on the Whitham averaging method for studying the formation of dispersive shock waves in an intense light pulse propagating through a saturable nonlinear medium. Although the Whitham modulation equations cannot be diagonalized in this case, the main characteristics of the dispersive shock can be derived by means of an analysis of the properties of these equations at the boundaries of the shock. Our approach generalizes a previous analysis of step-like initial intensity distributions to a more realistic type of initial light pulse and makes it possible to determine, in a setting of experimental interest, the value of measurable quantities such as the wave-breaking time or the position and light intensity of the shock edges.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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