Quasi-Optical Mode Converter for a 0.42-THz TE26 Mode Pulsed Gyrotron Oscillator

被引：8
|
作者：
Wang, Wei [1 ,2 ]
Song, Tao [1 ,2 ]
Liu, Diwei [1 ,2 ]
Zhuang, Qianmeng [1 ,2 ]
Liu, Shenggang [1 ,2 ]
机构：
[1] Univ Elect Sci & Technol China, Terahertz Sci & Technol Res Ctr, Sch Phys Elect, Chengdu 610054, Peoples R China
[2] Cooperat Innovat Ctr Terahertz Sci, Chengdu 610054, Peoples R China
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2016年 / 44卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Gyrotron; quasi-optical (QO) mode converter; terahertz; DESIGN;
D O I：
10.1109/TPS.2016.2603161
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A quasi-optical (QO) mode converter for a 0.42-THz, TE26 mode, pulsed gyrotron is designed, fabricated, and tested. Based on the geometric optics principle, vector diffraction theory, and the iterative Stratton-Chu method, a computer code is developed to design and optimize the QO mode converter. The scalar Gaussian mode content is about 93.7%, which agrees well with that obtained by the electromagnetic simulation software. The preliminary experiment of the 0.42-THz, TE26 mode QO mode converter shows that a well-focused Gaussian-like beam with 90.4% scalar Gaussian mode content has been observed on the output window by using an infrared video camera. The experimental results agree well with the theoretical prediction.
引用
收藏
页码：2406 / 2409
页数：4
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