高次谐波大回旋太赫兹振荡器多模工作特性  

The multi-modes, multi-harmonics behavior of a THz large-orbit gyrotron

作　　者：赵其祥 马梦诗 李想 吕游 张天钟[3] 彭麟[1] 王峨锋[4] 冯进军[4] ZHAO Qi-Xiang;MA Meng-Shi;LI Xiang;LV You;ZHANG Tian-Zhong;PENG Lin;WANG E-Feng;FENG Jin-Jun(School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China;Research and Development Center,Dynex Semiconductor Ltd.,Lincoln,LN63LF,UK;School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu,610054,China.;National Key Laboratory of Science and Technology on Vacuum Electronics,Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]桂林电子科技大学,信息与通信学院,广西桂林541004 [2]丹尼克斯半导体有限公司研发中心,英国伦敦,LN63LF,英国 [3]电子科技大学,电子科学与工程学院,四川成都610054 [4]中国电子科技集团公司第十二研究所微波电真空器件国家级重点实验室,北京100015

出　　处：《红外与毫米波学报》2022年第2期457-463,共7页Journal of Infrared and Millimeter Waves

基　　金：Supported by National Natural Science Foundation of China(62001131);Guangxi Natural Science (2019GXNSF-BA245066);Guangxi Science and Technology Base and Talent Special Project(AD19245042);the Dean Project of Guangxi Key Laboratory of WirelessBroadband Communication and Signal Processing Grant(GXKL06190102)。

摘　　要：设计了一支可工作于4~9次谐波的大回旋太赫兹振荡管,借助于三维粒子模拟,研究了设计的大回旋振荡管注-波互作用机理、高次谐波工作特性、谐波模式间竞争等关键特性。结果表明,通过调节磁场强度,可以在多个相邻谐波处连续激发振荡,实现频率为240 GHz到460 GHz之间的太赫兹波辐射,最大辐射功率为19kW。同时研究了第7、8和9次谐波模式之间的竞争,讨论了实现稳定注-波互作用和高次谐波状态下单模工作的方法。此外,论文还对不同谐波状态下的欧姆损耗功率进行了研究。In this paper,a LOG capable of operating from the 4^(th) to the 9^(th) harmonic is designed and investigated.With the assistance of the 3-D particle-in-cell simulation,the key features of the designed LOG,beam-wave inter⁃action dynamics and high-harmonic operation regimes are studied.It is shown that by tuning the external magnetic field intensity,successive excitation of the oscillation at a number of neighboring harmonics can be achieved,cor⁃responding to radiation frequencies between 240 GHz to 460 GHz with the maximum radiation power of 19 kW.Then,a detailed study on the competitions among the 7^(th),8^(th) and 9^(th) harmonics are conducted,providing an in⁃sight into the multi-modes,multi-harmonics behavior of the high-harmonic LOG.Following that,the methods to stabilize the beam-wave interaction and enable single mode operation at high harmonics are discussed.Additional⁃ly,the characterization of the ohmic loss power at different operation harmonics is conducted.

关 键 词：大回旋电子注 回旋管 高次谐波 太赫兹 

分 类 号：TN129[电子电信—物理电子学]