回旋管准光辐射器研究与设计  

Research and design of the quasi-optical mode launcher for the gyrotron

作　　者：刘建卫[1] 赵青[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《红外与毫米波学报》2015年第1期60-65,73,共7页Journal of Infrared and Millimeter Waves

基　　金：国家国际科技合作专项项目(2011DFA63190);国家自然科学基金(11275045);四川省国际合作计划项目(2013HH0001)~~

摘　　要：准光辐射器是高功率回旋管准光模式变换器的重要组成部分.采用几何光学理论分析圆波导准光辐射器,根据高斯波束(TEM00模)在辐射器切口处形成的原因,利用耦合波理论设计波纹波导准光辐射器.通过编写程序并进行数值优化完成140 GHz、TE28,8模式回旋管波纹波导准光辐射器的设计,结果表明波纹波导辐射器的总长度仅为205.2 mm,切口长度为47.2 mm,在辐射器螺旋切口Brillouin区内高斯模式标量相关系数大于98%.本文所用的方法也可用于其它频率和模式的回旋管准光辐射器设计.The quasi-optical launcher is an important part of quasi-optical mode converter in high power gyrotron. The circular waveguide quasi-optical launcher was analyzed with the theory of geometrical optics. To form the Gaussian mode（ TEM00） at the cut of the launcher,the coupled-wave theory was employed to design corrugated waveguide quasi-optical launcher. A high efficiency launcher has been designed for 140 GHz,TE28,8 mode. Results showthat total length of the launcher is only 205. 2 mm,and the cut length is 47. 2 mm. At the helical cut the scalar correlation efficiency of the Gaussian mode in the Brillouin zone is greater than 98%. The method can also be used for the designs of other frequency and mode gyrotron quasi-optical launcher.

关 键 词：回旋管 准光辐射器 几何光学 耦合波理论 

分 类 号：TN122[电子电信—物理电子学] TN814