渐变结构仿表面等离子体太赫兹传输线研究  

Study of Mimicking Surface Plasmon Terahertz Transmission Line with Gradually Changed Geometric Parameters

作　　者：钟任斌[1] 周俊[1] 刘维浩[1] 刘盛纲[1] 

机构地区：[1]电子科技大学太赫兹研究中心,四川成都610054

出　　处：《电子学报》2012年第9期1735-1739,共5页Acta Electronica Sinica

基　　金：国家重大基础研究项目(No.2007CB310401);教育部博士点基金(No.20100185110022)

摘　　要：本文利用有限元方法对圆柱开槽仿表面等离子体太赫兹(Terahertz,THz)传输线进行了详细的数值模拟研究,提出了一种尺寸渐变的仿表面等离子体THz传输线结构,发现在金属线上沿轴向构造渐深渐宽槽有利于将场能量最大程度地限制在导体表面,且能够汇聚电磁波,使得传输线表面波在传输过程中得到增强.研究结果将利于THz传输、近场成像、光谱和传感等应用.Numerical study on cylindrical corrugated Mimicking Surface Plasmons（MSPs） Terahertz（THz） transmission line with and without gradually changed geometric parameters was carried out by means of the finite element method.The results show that the gradual increased size of corrugates both in depth and width will help the confinement of the electromagnetic energy transmission on the surface of the wire,and the structure also has the function of concentration the propagation wave,which brings forth enhancement of the surface plasmon wave during its transmission along the wire.The obtained results will favor the applications of THz transmission,near-field imaging,spectroscopy and sensing.

关 键 词：太赫兹 仿表面等离子体 传输线 渐变结构 

分 类 号：O44[理学—电磁学]