太赫兹平行平板金属波导T型腔中消逝模共振频率的理论分析  

Theoretical Analysis of Evanescent Mode Resonance Frequency in a T-Shaped Cavity of the Terahertz Parallel-Plate Metal Waveguide

作　　者：吴琼 张惠芳[1] 曹清[1] 王凯[2] 李潮越 何英[1] 王燕[1] 苏雪梅[3] Wu Qiong;Zhang Huifang;Cao Qing;Wang Kai;Li Chaoyue;He Ying;Wang Yan;Su Xuemei(Departnent of Phgsics,Shanghai Universitgy,Shaaghai 200444,China;Key Labovatory of Infraredl Imaging Materials and Detectors,Shaughai Iustitute of Technical Physics,Chinese Academg of Sciences,Shaughai 200083,China;Key Laboratory of Coherent Light,Atomic and MolecularSpectroscopy,Ministry of Education,College of Plhgsics,Jilin Universitgy,Changchuw,Jilin 130012,China)

机构地区：[1]上海大学物理系,上海200444 [2]中国科学院上海技术物理研究所红外成像材料与器件重点实验室,上海200083 [3]吉林大学物理学院相干光与原子分子光谱教育部重点实验室,吉林长春130012

出　　处：《激光与光电子学进展》2020年第15期185-190,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61275103);国家自然科学基金青年科学基金(11804219,11704241)。

摘　　要：基于电磁理论及相关研究,提出了一个计算T型腔太赫兹平行平板金属波导消逝模共振频率的拟合公式,分别用拟合公式和COMSOL软件研究了不同参数下消逝模的共振频率。实验结果表明,两种方法得到的结果吻合程度较好,相对偏差均不超过0.3%。拟合公式提供了一种快速简单又能准确获得消逝模共振频率的计算方法。Based on electromagnetic theory and related research,a fitting formula for calculating the resonant frequency of the evanescent mode of a T-cavity terahertz parallel-plate waveguide is proposed.The resonant frequency of the evanescent mode under different parameters is studied using the fitting formula and COMSOL.software.Experimental results show that the results obtained by the two methods are in good agreement,and the relative deviation does not exceed 0.3%.The fitting formula provides a fast and simple calculation method that can accurately obtain the resonance frequency of the evanescent mode.

关 键 词：平行平板波导 谐振器 太赫兹 模式 

分 类 号：TN252[电子电信—物理电子学]