康普顿散射对低密度等离子体中强激光脉冲自聚焦的影响

Q4 Physics and Astronomy

光学技术 Pub Date : 2014-01-01 DOI:10.3788/GXJS20144001.0050

闫喜亮 Yan Xiliang, 郝东山 Hao Dongshan

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引用次数: 0

摘要

利用相关理论和多光子非线性康普顿散射模型，研究了康普顿散射对低密度等离子体中强激光脉冲自聚焦的影响。给出了入射激光与康普顿散射光形成激光自聚焦的新机制。给出了三次电流密度的修正方程。用数值模拟了该方程。结果表明，相对效应降低了强激光脉冲在等离子体中的自聚焦方向。康普顿散射加速了自聚焦方向。一般的自聚焦方向比非相对的效果要快。其关键原因是入射激光与康普顿散射光形成的耦合光的频率大于入射激光的频率。相对效应产生的自聚焦方向效应由康普顿散射效应补偿。

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Influences of Compton scattering on the self-focusing of the intense laser pulse in underdense plasma

Influences of Compton scattering on the self-focusing of the intense laser pulse in underdense plasma are studied using relative theory and the model of multi-photon nonlinear Compton scattering.A new mechanism of the laser self-focusing formed by the incident laser and Compton scattered light is given out.A revised equation on the third degree electric current density is given out.The equation is simulated by using numerical numbers.The results show that the self-focusing direction of the intense laser pulse in plasma is decreased by the relative effect.The self-focusing direction is accelerated by Compton scattering.General self-focusing direction is the faster than the non-relative effect.The key cause is the frequency of the coupling light formed by the incident laser and Compton scattered light is increased than the incident laser frequency.The self-focusing direction effect taken place by the relative effect is compensated by Compton scattering effect.

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来源期刊

光学技术 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

0.60

自引率

0.00%

发文量

6699

期刊介绍： The predecessor of Optical Technology was Optical Technology, which was founded in 1975. At that time, the Fifth Ministry of Machine Building entrusted the School of Optoelectronics of Beijing Institute of Technology to publish the journal, and it was officially approved by the State Administration of Press, Publication, Radio, Film and Television for external distribution. From 1975 to 1979, the magazine was named Optical Technology, a quarterly with 4 issues per year; from 1980 to the present, the magazine is named Optical Technology, a bimonthly with 6 issues per year, published on the 20th of odd months. The publication policy is: to serve the national economic construction, implement the development of the national economy, serve production and scientific research, and implement the publication policy of "letting a hundred flowers bloom and a hundred schools of thought contend".