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高重复频率相干衍射辐射超宽谱太赫兹源
引用本文:吴岱,李鹏,柏伟,黎明,杨兴繁. 高重复频率相干衍射辐射超宽谱太赫兹源[J]. 强激光与粒子束, 2013, 25(7): 1775-1778. DOI: 10.3788/HPLPB20132507.1775
作者姓名:吴岱  李鹏  柏伟  黎明  杨兴繁
作者单位:1.清华大学 工程物理系, 北京 1 00084;
摘    要:研究了一种新型相干衍射辐射(CDR)太赫兹源,该太赫兹源基于中国工程物理研究院自由电子激光相干强太赫兹源(FEL-THz)的加速器电子束束流,具有MHz量级重复频率。理论分析、数值计算和PIC模拟证明了此太赫兹源时间长度可达到ps量级,中心频率在100~400 GHz可调,截止频率位于1~2 THz,脉冲峰值功率可达10 kW量级,平均功率可达到W量级,并且功率随束流流强成平方正比关系。

关 键 词:相干衍射辐射   自由电子激光太赫兹源   超短电子束   高重复频率   超宽谱
收稿时间:2012-10-22;

High-repetition-rate ultra-broadband coherent diffraction radiation THz source
Wu Dai,Li Peng,Bai Wei,Li Ming,Yang Xingfan. High-repetition-rate ultra-broadband coherent diffraction radiation THz source[J]. High Power Laser and Particle Beams, 2013, 25(7): 1775-1778. DOI: 10.3788/HPLPB20132507.1775
Authors:Wu Dai  Li Peng  Bai Wei  Li Ming  Yang Xingfan
Affiliation:1.Department of Engineering Physics,Tsinghua University,Beijing 100084,China;2.Institute of Applied Electronics,CAEP,P.O.Box 919-1004,Mianyang 621900,China
Abstract:We proposed a coherent diffraction radiation (CDR) THz source with megahertz repetition rate, which is based on ultra-short electron beams of the free electron laser THz (FEL-THz) facility at CAEP. With theoretical analysis, numerical calculation and particle-in-cell (PIC) simulation, the pulse duration of this THz source is proved to be several picoseconds. The center frequency is tunable from 100 GHz to 400 GHz and the cut-off frequency is from 1 THz to 2 THz. The peak power is in 10 kW region and the average power can be a few watts. Furthermore, the THz power is proportional to the square of the electron beam current.
Keywords:free electron laser THz facility  ultra-short electron beam  high repetition rate  ultra-broadband
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