计算物理 ›› 2001, Vol. 18 ›› Issue (1): 64-66.

• 论文 • 上一篇    下一篇

自由电子激光中稳定波长反馈引起的类极限环振荡

汪尊伟1, 束小建2   

  1. 1. 黄山高等专科学校物理系, 安徽 黄山 245021;
    2. 北京应用物理与计算数学研究所, 北京 100088
  • 收稿日期:1999-09-01 修回日期:2000-01-24 出版日期:2001-01-25 发布日期:2001-01-25
  • 作者简介:汪尊伟(1954-),男,安徽歙县,副教授,从事计算物理方面的研究.
  • 基金资助:
    中国工程物理研究院科学技术基金资助项目(990448)

LIMIT-CYCLE-LIKE OSCILLATION CAUSED BY WAVELENGTH STABILIZATION FEEDBACK IN A FREE-ELECTRON LASER

WANG Zun-wei1, SHU Xiao-jian2   

  1. 1. Department of Physics, Huangshan College, Huangshan 245021, P R China;
    2. Institute of Applied Physics and Computational Mathematics, Beijing 100088, P R China
  • Received:1999-09-01 Revised:2000-01-24 Online:2001-01-25 Published:2001-01-25

摘要: 研究了自由电子激光实验观察到的由稳定波长反馈引起的新的振荡现象.数值模拟结果证实了实验中观测到的激光功率和电子束能量的周期性调制振荡,调制频率和调制深度与实验值符合较好.分析表明这种类极限环振荡主要起因于超辐射引起的频率蠕变.

关键词: 自由电子激光, 反馈, 频率蠕变, 极限环振荡, 超辐射

Abstract: A new kind of osciiiations caused by waveiength stabiiization feedback ioop is investigated.The resuits of 1D numericai simuiations confirm the moduiations of the eiectron energy and FEL power, and the caicuiated moduiation freguency and depth are in good agreement with the experiments.It is found that the freguency creep caused by superradiance usuaiiy resuits in this kind of iimit-cycie-iike osciiiations.

Key words: free-eiectron iaser, feedback, freguency creep, limit-cycie osciiiation, superradiance

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