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arXiv physics/0409081physics.optics
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饱和介质中多维光孤子的实验观测准则

Criteria for the experimental observation of multi-dimensional optical solitons in saturable media

Yi-Fan Chen, Kale Beckwitt, Frank W. Wise, Boris A. Malomed

摘要:

提出了在可饱和折射非线性介质中观测多维光孤子的实验判据。该标准适用于实际的材料参数(表征立方自聚焦和五阶自散焦非线性,双光子损耗,和光学损伤阈值)为各种玻璃。通过这种方式,我们确定了这些玻璃中孤子形成的操作窗口。结果发现,双光子吸收设置严格的限制上的窗口。我们的结论是,虽然一个定义良好的窗口的参数存在的二维孤子(空间或时空),对于他们的三维时空对应物存在这样的窗口\emph{does not},由于玻璃的非线性损失。

英文摘要:

Criteria for experimental observation of multi-dimensional optical solitons in media with saturable refractive nonlinearities are developed. The criteria are applied to actual material parameters (characterizing the cubic self-focusing and quintic self-defocusing nonlinearities, two-photon loss, and optical-damage threshold) for various glasses. This way, we identify operation windows for soliton formation in these glasses. It is found that two-photon absorption sets stringent limits on the windows. We conclude that, while a well-defined window of parameters exists for two-dimensional solitons (spatial or spatiotemporal), for their three-dimensional spatiotemporal counterparts such a window \emph{does not} exist, due to the nonlinear loss in glasses.

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