Design of quasi-optical mode converter for 140 GHz gyrotron

被引：0

作者：

Wang, Bin ^{[1
]}

He, Hong ^{[1
]}

Liu, Yunlong ^{[1
]}

Wang, Hu ^{[2
]}

机构：

[1] College of Electronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing

[2] Institute of Oceanographic Instrumentation, Shandong Academy of Science, Qingdao

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2015年 / 27卷 / 11期

关键词：

Coupled mode theory; Gyrotron; Mirror system; Quasi-optical mode converter;

D O I：

10.11884/HPLPB201527.113002

中图分类号：

学科分类号：

摘要：

This paper presents a high efficiency Denisov quasi-optical mode converter for 140 GHz, TE28,8 mode gyrotron. The mode converter includes a dimpled wall launcher and a mirror system. The mirror system consists of four mirrors, of which the first mirror is a quasi-parabolic one. A simulation code is developed based on the coupled mode theory and the vector diffraction theory. The simulation results show that the focal length of the parabolic mirror has a great effect on the vector Gaussian correlation coefficient. Therefore, it is important to select an appropriate focal length for the mirror system. The simulation results show that the scalar Gaussian correlation coefficient of the operating cavity mode to a fundamental Gaussian distribution on the window plane is about 98%, and the corresponding vector correlation coefficient is more than 90%. © 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.

引用

页数：8

共 17 条

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