锥形纳米金属线太赫兹波聚焦特性研究  

Study on the focusing characteristics of conical metal nanowires

作　　者：梁华伟[1] 阮双琛[1] 张敏[1] 苏红[1] 

机构地区：[1]深圳大学电子科学与技术学院深圳市激光工程重点实验室先进光学精密制造技术广东普通高校重点实验室,深圳518060

出　　处：《深圳大学学报（理工版）》2012年第4期300-303,共4页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(61078018)~~

摘　　要：研究锥形金属线上太赫兹表面等离子激元的聚焦特性.计算传输过程中横截面上的场分布,得到环形焦斑宽度约为金属线半径的2.4倍.提出一种在锥形金属线上传输时,太赫兹表面等离子激元强度变化的求解方法,得出不同结构金属线上太赫兹波强度随传输距离增加的变化关系.The focusing characteristics of terahertz （THz） surface plasmon polaritons （SPPs） on conical metal nanowires were studied. The field distribution on cross sections of nanowires was investigated in detail, and the breadth of the ring facula, which was 2.4 times of the radius of nanowires, was obtained. Specially, the method for solving the intension of THz SPPs on conical metal nanowires was presented. Then, the curves of the intension of THz SPPs on different nanowires were obtained by using the method.

关 键 词：光学 纳米金属线 太赫兹波 表面等离子激元 纳米聚焦 趋肤深度 

分 类 号：TN211[电子电信—物理电子学]