摘要
以折叠波导为基本结构的真空电子器件,具有大功率、宽频带和制造成本低的优点,本文通过深入研究折叠波导振荡器的冷腔结构、色散方程和耦合阻抗,给出了可以产生THz的折叠波导振荡器的基本结构.并利用三维PIC粒子模拟软件进行了三维模拟计算,结果显示,在输入电子注电压为20.6kV,电流为0.12A,磁场为3000高斯时,可得到频率为0.1THz,平均输出功率174W,互作用效率大于7%.
Folded waveguide structures are potential compact sources of high-power terahertz radiation.We present feasibility studies of an oscillator,the fundamental theory including dispersion and coupling impedance are given.The geometry at 0.1THz is designed by theory and software,and the structure is simulated with 3D PIC code.The results are presented,a 175 W output power at 0.1THz is observed,the interaction efficiency is over 7%,while an electron beam of voltage 20.6kV,current 0.121A is injected, and the magnetic field is 3000 gauss.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2009年第12期2677-2680,共4页
Acta Electronica Sinica
基金
国家973重点基础研究发展规划(No.2007CB310401)
国家自然科学基金(No.1067610)
关键词
折叠波导
太赫兹
色散
folded waveguide
terahertz
dispersion
