دورية أكاديمية
A 0.33-THz second-harmonic frequency-tunable gyrotron
| العنوان: | A 0.33-THz second-harmonic frequency-tunable gyrotron |
|---|---|
| المؤلفون: | Li, Zheng-Di, Du, Chao-Hai, Qi, Xiang-Bo, Luo, Li, Liu, Pu-Kun |
| المساهمون: | Liu, PK (reprint author), Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China., Chinese Acad Sci, Inst Elect, Beijing 100190, Peoples R China., Univ Chinese Acad Sci, Beijing 100049, Peoples R China., Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China. |
| المصدر: | 知网 ; EI ; SCI ; CSCD |
| بيانات النشر: | CHINESE PHYSICS B |
| سنة النشر: | 2016 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | gyrotron, mode transition, second harmonic, frequency tuning, terahertz, ELECTRON-CYCLOTRON MASER, MODE COMPETITION, LINEAR-THEORY, OSCILLATORS, GHZ, TECHNOLOGY, SIMULATION, DESIGN, RANGE |
| الوصف: | Dynamics of the axial mode transition process in a 0.33-THz second-harmonic gyrotron is investigated to reveal the physical mechanism of realizing broadband frequency tuning in an open cavity circuit. A new interaction mechanism about propagating waves, featured by wave competition and wave cooperation, is presented and provides a new insight into the beam-wave interaction. The two different features revealed in the two different operation regions of low-order axial modes (LOAMs) and high-order axial modes (HOAMs) respectively determine the characteristic of the overall performance of the device essentially. The device performance is obtained by the simulation based on the time-domain nonlinear theory and shows that using a 12-kV/150-mA electron beam and TE-3,4 mode, the second harmonic gyrotron can generate terahertz radiations with frequency-tuning ranges of about 0.85 GHz and 0.60 GHz via magnetic field and beam voltage tuning, respectively. Additionally, some non-stationary phenomena in the mode startup process are also analyzed. The investigation in this paper presents guidance for future developing high-performance frequency-tunable gyrotrons toward terahertz applications. ; National Natural Science Foundation of China [61471007, 61531002, 61522101, 11275206]; Seeding Grant for Medicine and Information Science of Peking University, China [2014-MI-01] ; SCI(E) ; EI ; 中国科技核心期刊(ISTIC) ; 中国科学引文数据库(CSCD) ; ARTICLE ; pkliu@pku.edu.cn ; 2 ; 589-595 ; 25 |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 1674-1056 1741-4199 |
| العلاقة: | CHINESE PHYSICS B.2016,25,(2).; 1395431; http://hdl.handle.net/20.500.11897/437832Test; WOS:000370179100092 |
| DOI: | 10.1088/1674-1056/25/2/029401 |
| الإتاحة: | https://doi.org/20.500.11897/437832Test https://doi.org/10.1088/1674-1056/25/2/029401Test https://hdl.handle.net/20.500.11897/437832Test |
| رقم الانضمام: | edsbas.FD3661D5 |
| قاعدة البيانات: | BASE |
| تدمد: | 16741056 17414199 |
|---|---|
| DOI: | 10.1088/1674-1056/25/2/029401 |