红外与毫米波学报2022，Vol.41Issue(2)：457-463,7.DOI:10.11972/j.issn.1001-9014.2022.02.012
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
摘要
Abstract
In this paper,a LOG capable of operating from the 4th to the 9th 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 7th,8th and 9th 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Key words
axis-encircling electron beams/gyrotron/high harmonics/THz分类
信息技术与安全科学引用本文复制引用
赵其祥,马梦诗,李想,吕游,张天钟,彭麟,王峨锋,冯进军..高次谐波大回旋太赫兹振荡器多模工作特性[J].红外与毫米波学报,2022,41(2):457-463,7.基金项目
Supported by National Natural Science Foundation of China(62001131),Guangxi Natural Science Foundation Project(2019GXNSF-BA245066),Guangxi Science and Technology Base and Talent Special Project(AD19245042),the Dean Project of Guangxi Key Laboratory of Wireless Broadband Communication and Signal Processing Grant(GXKL06190102). （62001131）
