Simulations of a two-stream backward-wave oscillator with a slot-hole structure

doi:10.1088/1674-1056/21/1/018401

中国物理B ›› 2012, Vol. 21 ›› Issue (1): 18401-018401.doi: 10.1088/1674-1056/21/1/018401

Simulations of a two-stream backward-wave oscillator with a slot-hole structure

史宗君, 唐效频, 杨梓强, 兰峰, 梁正

Terahertz Research Centre, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China

收稿日期:2011-03-20 修回日期:2011-06-10 出版日期:2012-01-15 发布日期:2012-01-20
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11075032 and 10975031).

Simulations of a two-stream backward-wave oscillator with a slot-hole structure

Shi Zong-Jun(史宗君)^†, Tang Xiao-Pin(唐效频), Yang Zi-Qiang(杨梓强), Lan Feng(兰峰), and Liang Zheng(梁正)

Terahertz Research Centre, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China

Received:2011-03-20 Revised:2011-06-10 Online:2012-01-15 Published:2012-01-20
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11075032 and 10975031).

摘要/Abstract

摘要： We study a two-stream backward-wave oscillator with a slot-hole structure at short millimeter waves with the help of a three-dimensional particle-in-cell simulation. In order to increase the interaction region of the electron beam, the efficiency and the output power, a slot-hole loaded rectangular waveguide structure used as the high-frequency system is proposed. Based on the mechanism of the backward-wave oscillator, a slow-wave oscillator with a frequency of 0.14 THz is designed. The simulations show that the output power and the efficiency of the oscillator can be enhanced due to the coupling between the two beams through the slot holes. The interaction efficiency is 5.18%, and the starting current density is below 5 A·cm^-2 for the two beams. These attractive results indicate that, based on the two-stream backward-wave oscillator, we can get short millimeter wave sources with high power and low current density.

关键词: slot-hole structure, short millimeter wave, two-stream backward-wave oscillator

Abstract: We study a two-stream backward-wave oscillator with a slot-hole structure at short millimeter waves with the help of a three-dimensional particle-in-cell simulation. In order to increase the interaction region of the electron beam, the efficiency and the output power, a slot-hole loaded rectangular waveguide structure used as the high-frequency system is proposed. Based on the mechanism of the backward-wave oscillator, a slow-wave oscillator with a frequency of 0.14 THz is designed. The simulations show that the output power and the efficiency of the oscillator can be enhanced due to the coupling between the two beams through the slot holes. The interaction efficiency is 5.18%, and the starting current density is below 5 A·cm^-2 for the two beams. These attractive results indicate that, based on the two-stream backward-wave oscillator, we can get short millimeter wave sources with high power and low current density.

Key words: slot-hole structure, short millimeter wave, two-stream backward-wave oscillator

中图分类号: (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))

84.40.Fe

07.57.Hm (Infrared, submillimeter wave, microwave, and radiowave sources)

史宗君, 唐效频, 杨梓强, 兰峰, 梁正. Simulations of a two-stream backward-wave oscillator with a slot-hole structure[J]. 中国物理B, 2012, 21(1): 18401-018401.

Shi Zong-Jun(史宗君), Tang Xiao-Pin(唐效频), Yang Zi-Qiang(杨梓强), Lan Feng(兰峰), and Liang Zheng(梁正) . Simulations of a two-stream backward-wave oscillator with a slot-hole structure[J]. Chin. Phys. B, 2012, 21(1): 18401-018401.

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Simulations of a two-stream backward-wave oscillator with a slot-hole structure

Simulations of a two-stream backward-wave oscillator with a slot-hole structure

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