频率可调谐太赫兹回旋管研究  

Investigations on Frequency-tunable Terahertz Gyrotrons

作　　者：刘頔威[1,2] 王维[1,2] 张开春[1,2] 宋韬[1,2] LIU Di-wei;WANG Wei;ZHANG Kai-chun;SONG Tao(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Key Laboratory of THz Technology,Ministry of Education,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]电子科技大学电子科学与工程学院,四川成都611731 [2]电子科技大学太赫兹技术教育部重点实验室,四川成都611731

出　　处：《真空电子技术》2024年第3期41-47,共7页Vacuum Electronics

基　　金：国家自然科学基金(62371092,61988102,61921002,62101106);四川省自然科学基金(2024NSFSC0465);中央高校基本科研业务费专项资金资助(ZYGX 020ZB008和ZYGX021J011);四川省博士后科学专项基金(TB2022039)。

摘　　要：频率可调太赫兹回旋管在太赫兹增强核磁共振等方面有广泛的应用。论文对自研的频率可调基波太赫兹回旋管、频率可调谐波太赫兹回旋管,以及多模频率可调太赫兹回旋管做了详细介绍。发展的频率可调太赫兹回旋管最高工作频率为660 GHz,连续波功率百瓦量级。基于自研的频率可调太赫兹回旋管和大功率太赫兹传输线,实现了太赫兹增强核磁共振系统,对1 H实现了350倍灵敏度增强,对13 C实现了88倍灵敏度增强。Frequency-tunable terahertz gyrotrons have a wide range of applications in terahertz enhanced nuclear magnetic resonance(DNP NMR)and other fields.The self-developed frequency-tunable fundamental cyclotron harmonic terahertz gyrotrons,the second cyclotron harmonic terahertz gyrotrons,and multi-mode cyclotron harmonic terahertz gyrotrons are introduced in details.The highest operating frequency of the gyrotrons is 660 GHz,and the continuous-wave output power is at the level of 100 watts.Based on the self-developed frequency-tunable terahertz gyrotrons and high-power terahertz transmission lines,a terahertz enhanced NMR system is developed.The preliminary experimental results are obtained with the sensitivity enhancement of 350 for 1H and 88 for 13C.

关 键 词：太赫兹 回旋管 频率可调 太赫兹增强核磁共振 灵敏度 

分 类 号：TN12[电子电信—物理电子学]