摘要
文章理论分析了太赫兹波在金属镀层空芯圆波导中的传输特性。比较了在内直径为2mm的空芯圆波导中分别镀金、铅、镍不同金属时不同入射频率的太赫兹波的理论衰减常数,计算了镀不同金属而入射波波长一定的情况下波导中主模即最低模TE11模的衰减常数随波导内直径的变化情况。进一步研究表明Au,Ag,Cu均可作为空芯圆波导中优良的金属镀层以用于太赫兹波的低损耗传输。
The transmission characteristics of hollow metallic film-coated circular waveguide for THz radiation have been theoretically analyzed. We compared the theoretical attenuation coefficients of THz radiations with different incident frequencies in hollow circular waveguides with a bore diameter of 2mm with different metallic coating films of Au, Pb and Ni, and, for a given incident frequency, calculated the relationships between attenuation coefficients of the dominant mode TE11 and the bore diameters of hollow waveguides with different metallic coating films. Further investigations indicated that Au, Ag and Cu can all be used as excellent metallic coating films in hollow circular waveguides for the transmission of THz radiations with low attenuation coefficients.
出处
《激光与红外》
CAS
CSCD
北大核心
2007年第12期1287-1289,共3页
Laser & Infrared
基金
国家自然科学基金面上项目资助课题(No.60671036)
关键词
太赫兹波
金属镀层空芯圆波导
传输特性
衰减常数
THz radiation
hollow metallic film-coated circular waveguide
transmission characteristics
attenuation coefficient
