单缝双环结构超材料太赫兹波调制器  

Singly split double ring metamaterial THz wave modulator

作　　者：李乾坤[1,2] 李德华[1,2] 周薇[1] 马建军[1,2] 鞠智鹏[1,2] 屈操[1,2] 

机构地区：[1]山东科技大学理学院,山东青岛266590 [2]青岛市太赫兹技术重点实验室,山东青岛266590

出　　处：《红外与激光工程》2013年第6期1553-1556,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金(61071016/F010608);青岛市科技计划项目(10-3-4-2-5-jch)

摘　　要：超材料指的是一些具有人工设计的结构,并呈现出自然材料所不具备的超常物理性质,它能够以一种新奇的方式实现对电磁波的调控。文中理论研究了单缝双环结构超材料太赫兹调制器的调制机理,运用等效电路法及微分方程法求解出调制器的共振频率与调制器本身几何参数的一般数学表达式,并用Matlab对不同调制频率情况下的几何参数进行了计算。运用CST(microwave studio)对调制器进行了理论模拟,数值模拟结果显示,该调制器频率在0.775 THz,0.95 THz和1.65 THz处共振吸收强度分别为70%,65%和68%,该结构调制器可以作为太赫兹波的调制器。Metamaterial refers to some of the artificial structures, and it represents superior physical properties that natural material do not have and it can control electromagnetic waves in novel way. This paper analysed modulation mechanism of a single split double ring structure metamaterial in theory, and by applying differential equation and method of equivalent circuit to solve the general mathematical expression of resonant frequency of the modulator with geometric parameters of itself. Different modulation frequency of geometric parameters of modulator with Matlab was calculated. The modulator was simulated theoretically using CST （microwave studio）, the numerical simulation of the resonance absorption intensity at 0.775 THz, 0.95 THz and 1.65 THz could reach 70%, 65% and 68% respectively. The structure of singly split double ring metamaterial can be used as a THz modulator.

关 键 词：超材料 太赫兹波 调制器 

分 类 号：O437[机械工程—光学工程]