Theoretical investigation of a high efficiency and broadband subterahertz gyrotron

被引：40
|
作者：
Chen, Nai-Ching [1 ]
Chang, Tsun-Hsu [1 ]
Yuan, Ching-Pin [1 ]
Idehara, Toshitaka [2 ]
Ogawa, Isamu [2 ]
机构：
[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
[2] Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 16期
关键词：
BACKWARD-WAVE OSCILLATOR; OPERATION; GUIDE;
D O I：
10.1063/1.3400216
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This study investigates the electron dynamics of gyrotron interaction in a tapered waveguide and proposes an interaction structure for a 0.2 THz TE(02) reflective gyrotron backward-wave oscillator (gyro-BWO). The design shows the advantages of high power, continuous, and broadband frequency tuning, mode converter free, and inherently possesses mode-selective ability to suppress the potentially competing TE(22) mode. Calculated results indicate that the reflective TE(02) gyro-BWO is capable of generating a peak power of 3.3 kW corresponding to 26.3% interacting efficiency with a broad 3dB tuning bandwidth of 6.9 GHz at beam current I(b)=0.5 A and beam voltage V(b)=25 kV. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3400216]
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页数：3
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