太赫兹自由电子激光放大器研究  

Research on Terahertz Free Electron Laser Amplifier

作　　者：王天一 赵晟 赵刚 黄森林[1] 刘克新[1] WANG Tian-yi;ZHAO Sheng;ZHAO Gang;HUANG Sen-lin;LIU Ke-xin(Institute of Heavy Ion Physics,Peking University,Beijing 100871,China)

机构地区：[1]北京大学物理学院重离子物理研究所,北京100871

出　　处：《真空电子技术》2022年第1期8-13,18,共7页Vacuum Electronics

基　　金：国家自然科学基金重点项目(11735002)。

摘　　要：太赫兹自由电子激光(FEL)是获得高功率太赫兹辐射的重要途径,目前运行的太赫兹FEL装置基本上都采用振荡器结构,若采用FEL放大器模式,则可产生具有更高峰值功率的太赫兹辐射。本文以北京大学超导电子直线加速器的束流参数为基础,通过模拟分析确定了太赫兹FEL放大器对太赫兹种子源、电子束流及波荡器等的要求。模拟结果显示,太赫兹种子的峰值功率在10 W以上即可实现太赫兹FEL放大;在较易实现的参数条件下,可获得峰值功率数兆瓦的太赫兹辐射。Terahertz free electron laser(THz FEL) is an important way to obtain high-power THz radiation. Currently, almost all the THz FEL facilities are operated at oscillator mode. By employing FEL amplifier, it is possible to generate THz radiation with higher peak power. Based on the electron beam parameters of the superconducting radio-frequency linac of Peking University, the requirements of THz FEL amplifier for THz seed source, electron beam andundulator have been determined. The simulation results show that THz FEL amplifier can be realized when the peak power of THz seed exceeds 10 W, and the peak power of THz radiation can reach up to several MWs with easily achievable parameters.

关 键 词：太赫兹 自由电子激光 放大器 滑移效应 

分 类 号：TN248.6[电子电信—物理电子学]