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arXiv physics/0503131physics.opticsphysics.atom-ph
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气体中超短强脉冲自聚焦的变分分析

Variational analysis of self-focusing of intense ultrashort pulses in gases

E. Arevalo, A. Becker

摘要:

本文用微扰理论导出了高斯激光脉冲在气体介质中传播的电场表达式。将该表达式作为变分法的试解,得到了超短脉冲宽度、强度和自聚焦距离的准解析解。的近似给出了一个改进的协议与数值模拟的结果的脉冲的输入功率的值比以前的分析结果在文献中提供了一个广泛的范围。

英文摘要:

By using perturbation theory we derive an expression for the electrical field of a Gaussian laser pulse propagating in a gas medium. This expression is used as a trial solution in a variational method to get quasianalytical solutions for the width, intensity and self-focusing distance of ultrashort pulse. The approximation gives an improved agreement with results of numerical simulations for a broad range of values of the input power of the pulse than previous analytical results available in the literature.

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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