Terahertz and sub-terahertz science and technology are promising topics today. However, it is difficult to obtain high power source of terahertz wave. In this paper, the mode competition and beam-wave interaction in a gradually tapered cavity are studied to achieve high efficiency of a 0.4THz second harmonic gyrotron in practice. In order to attain high power and stable radiation, the TE32,5 mode is selected as the operating mode of the desired gyrotron to realize single mode oscillation. The issues of studying on the high-order mode gyrotrons are solved effectively by transforming the generalized telegraphist's equations. The efficiency and output power of the gyrotron under different conditions have been calculated by the code, which is based on the transformed equations. Consequently, the results show that single mode second harmonic radiation with power of over 150 kW at frequency of 0.4 THz could be achieved.
Skip Nav Destination
Article navigation
July 2013
Research Article|
July 19 2013
Numerical study on a 0.4 THz second harmonic gyrotron with high power
Lei Chaojun;
Lei Chaojun
1
Terahertz Science and Technology Research Center, University of Electronics Science and Technology of China
, Chengdu 610054, China
2
The Chinese People's Armed Police Force Academy
, Langfang 065000, China
Search for other works by this author on:
Yu Sheng;
Yu Sheng
1
Terahertz Science and Technology Research Center, University of Electronics Science and Technology of China
, Chengdu 610054, China
Search for other works by this author on:
Li Hongfu;
Li Hongfu
1
Terahertz Science and Technology Research Center, University of Electronics Science and Technology of China
, Chengdu 610054, China
Search for other works by this author on:
Liu Yinghui;
Liu Yinghui
1
Terahertz Science and Technology Research Center, University of Electronics Science and Technology of China
, Chengdu 610054, China
Search for other works by this author on:
Niu Xinjian;
Niu Xinjian
1
Terahertz Science and Technology Research Center, University of Electronics Science and Technology of China
, Chengdu 610054, China
Search for other works by this author on:
Zhao Qixiang
Zhao Qixiang
1
Terahertz Science and Technology Research Center, University of Electronics Science and Technology of China
, Chengdu 610054, China
Search for other works by this author on:
Phys. Plasmas 20, 072108 (2013)
Article history
Received:
April 15 2013
Accepted:
June 17 2013
Citation
Lei Chaojun, Yu Sheng, Li Hongfu, Liu Yinghui, Niu Xinjian, Zhao Qixiang; Numerical study on a 0.4 THz second harmonic gyrotron with high power. Phys. Plasmas 1 July 2013; 20 (7): 072108. https://doi.org/10.1063/1.4816023
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Progress toward fusion energy breakeven and gain as measured against the Lawson criterion
Samuel E. Wurzel, Scott C. Hsu
Weakly nonlinear incompressible Rayleigh–Taylor–Kelvin–Helmholtz instability in plane geometry
Zhen-Qi Zou, Jun-Feng Wu, et al.
Related Content
Development of high-power gyrotrons with gradually tapered cavity
Phys. Plasmas (December 2012)
High harmonic terahertz confocal gyrotron with nonuniform electron beam
Phys. Plasmas (January 2016)
Accurate identification of whispering gallery mode patterns of gyrotron with stabilized electro-optic imaging system
Phys. Plasmas (January 2018)
TESLA: Large Signal Simulation Code for Klystrons
AIP Conference Proceedings (December 2003)
Suppression and nonlinear excitation of parasitic modes in second harmonic gyrotrons operating in a very high order mode
Appl. Phys. Lett. (July 2015)