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arXiv 1902.06975nlin.PSphysics.flu-dyn
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散焦非线性光学材料中色散shock waves的破波和形成

Wave breaking and formation of dispersive shock waves in a defocusing nonlinear optical material

M. Isoard, A. M. Kamchatnov, N. Pavloff

摘要:

本文从理论上描述了在均匀背景光强下,光脉冲在非线性光学材料中传播的准一维横向扩展。对于短的传播距离的脉冲可以描述在一个非色散近似的黎曼的方法。对于更大的距离,发生波破碎,导致在脉冲两端形成分散的冲击。我们描述了这种现象内Whitham调制理论,这产生了很好的协议与数值模拟。我们的分析方法,使人们有可能提取领先的渐近行为的参数的冲击。

英文摘要:

We theoretically describe the quasi one-dimensional transverse spreading of a light pulse propagating in a nonlinear optical material in the presence of a uniform background light intensity. For short propagation distances the pulse can be described within a nondispersive approximation by means of Riemann's approach. For larger distances, wave breaking occurs, leading to the formation of dispersive shocks at both ends of the pulse. We describe this phenomenon within Whitham modulation theory, which yields an excellent agreement with numerical simulations. Our analytic approach makes it possible to extract the leading asymptotic behavior of the parameters of the shock.

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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