| SASE自由电子激光起振问题及统计特性的数值模拟 |
| |
| 引用本文： | 窦玉焕,束小建.SASE自由电子激光起振问题及统计特性的数值模拟[J].强激光与粒子束,2002,14(6):857-861. |
| |
| 作者姓名： | 窦玉焕 束小建 |
| |
| 作者单位： | 1. 中国工程物理研究院 研究生部， 北京 100088； 2. 北京应用物理与计算数学研究所， 北京 100088 |
| |
| 基金项目： | 国家863激光技术领域资助课题(2002AA826020) |
| |
| 摘 要： | 介绍一种自放大自发辐射自由电子激光（SASE FEL）的自发辐射和电子束噪声的数学描述，运用修正的一维非定态程序，对SASE FEL 起振问题及光场统计特性进行了数值模拟，分析了自发辐射谱的发展过程及一定频带宽度内光场随机特性的统计规律，数值模拟结果与理论结果符合较好。
|
| 关 键 词： | 自由电子激光 自放大自发辐射 统计特性 光谱 数值模拟 |
| 文章编号： | 1001-4322(2002)06-0857-05 |
| 收稿时间： | 2002/3/27 |
| 修稿时间： | 2002年3月27日 |
Numerical stimulations of start-up and statistical properties of SASE FEL |
| |
| dou yu huan,shu xiao jian.Numerical stimulations of start-up and statistical properties of SASE FEL[J].High Power Laser and Particle Beams,2002,14(6):857-861. |
| |
| Authors: | dou yu huan shu xiao jian |
| |
| Institution: | 1. Gradulate School, CAEP, P.O. Box 2101, Beijing 100088, China;2. Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088, China |
| |
| Abstract: | Mathematical model based on spontaneous emission and shot noise of SASE FEL is introduced. A detailed study of start up and statistical properties of the radiation from a SASE FEL operating has been performed by means of the modified 1D time dependent FEL code. It is shown that the width of the radiation spectrum becomes at first narrow then broad. After several gain lengths the spectrum transforms into that of the high gain FEL amplifier. The statistical properties of the radiation have been proved that finite time integrals of the instantaneous power follow a gamma distribution. |
| |
| Keywords: | free electron laser self amplified spontaneous emission statistical properties spectrum numerical stimulations |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
| 点击此处可从《强激光与粒子束》下载免费的PDF全文 |
