W波段回旋管准光模式变换器的研究  

Investigation of Quasi-optical Mode Converter for W Band Gyrotron

作　　者：赵国慧 薛谦忠[1,2] 王勇 王虎[3] 耿志辉 张珊[1,2] 王雪微[1,2] ZHAO Guohui;XUE Qianzhong;WANG Yong;WANG Hu;GENG Zhihui;ZHANG Shah;WANG Xuewei(Institute of Electronics, Chinese Academy of Science, Beijing 101407, China;University of Chinese Academy of Sciences, Beijing 101408, China;Institute of Marine Instrumentation, Shandong Academy of Sciences, Qingdao 266061, China)

机构地区：[1]中国科学院电子学研究所,北京101407 [2]中国科学院大学,北京101408 [3]山东省科学院海洋仪器仪表研究所,青岛266061

出　　处：《电子与信息学报》2018年第7期1767-1773,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(11475182)~~

摘　　要：该文对W波段TE_(62)模回旋管准光模式变换器的辐射器和镜面系统进行了设计与实验验证。基于耦合模理论,采用两级微扰对辐射器进行了设计,获得了圆波导内壁上的类高斯束斑的场分布;基于惠更斯原理的矢量衍射积分理论,对准光模式变换器的镜面系统进行了优化设计,模拟与计算结果表明准光模式变换器的模式变换效率为92.3%。最后,通过热测实验,验证了输出模式为W波段类高斯模式。The design and experimental verification of the launcher and mirror system of W band TE62 mode gyrotron quasi optical mode converter are presented. Based on the coupled mode theory, two order perturbation is used to design the launcher. The field distribution of the Gauss beam spot on the inner wall of the circular waveguide is obtained. The vector diffraction integral theory based on Huygens＇s principle is used to optimize the mirror system of the optical mode converter. Simulation and calculation results show that the mode conversion efficiency of quasi optical mode the converter is 92.3%. Finally, a thermal measurement experiment is carried out to verify that the output mode is W band Gauss like mode.

关 键 词：回旋管 准光模式变换器 数值模拟 

分 类 号：TN811[电子电信—信息与通信工程] TN814