Stady on a high efficient Denisov-type launcher for high-power gyrotron oscillators

被引：3

作者：

Wang Hu ^{[1
,2
]}

Shen Wen-Yuan ^{[1
,2
]}

Geng Zhi-Hui ^{[1
]}

Xu Shou-Xi ^{[1
]}

Wang Bin ^{[3
]}

Du Chao-Hai ^{[4
]}

Liu Pu-Kun ^{[4
]}

机构：

[1] Chinese Acad Sci, Inst Elect, Key Lab High Power Microwave Sources & Technol, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China

[4] Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China

来源：

ACTA PHYSICA SINICA | 2013年 / 62卷 / 23期

基金：

中国国家自然科学基金;

关键词：

gyrotron; quasi-optical launcher; coupled mode theory; mode transformation; OPTICAL MODE CONVERTER;

D O I：

10.7498/aps.62.238401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, a high-efficiency Denisov-type launcher, a hardcore of quasi-optical mode converters in high-power gyrotron oscillators, is investigated. Based on integral expression of Bessel functions and geometric optics, the propagation of EM wave in circular waveguides, the syntheses of amplitude and phase of nine modes are analyzed in detail. A generalized method for designing the launcher with a dimpled waveguide wall operating in different modes is demonstrated. This method shows how to select a set of appropriate coupled modes to synthesize the Gaussian-like distribution on the inner wall of the launcher. A program is developed and its accuracy is confirmed by a high-power gyrotron at 140 GHz, in TE28,8 mode theoretically. Numerical calculations show a good agreement with reported results.

引用

页数：9

共 23 条

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