太赫兹超材料多频吸收器特性研究  

Terahertz Multi-Frequency Absorbers Based on Metamaterials

作　　者：张璋 于建达 姚建铨[1] 韦德泉 

机构地区：[1]天津大学精密仪器与光电子工程学院激光与光电子研究所,天津300072 [2]枣庄学院光电工程学院,山东枣庄277160

出　　处：《枣庄学院学报》2017年第5期33-39,共7页Journal of Zaozhuang University

基　　金：国家自然科学基金资助项目(项目编号:61271066;61701434);中国博士后科学基金(项目编号:2015M571263);山东省自然科学基金面上项目(项目编号:ZR201702200400);山东省高等学校科技计划项目(项目编号:J17KA087);枣庄市科技成果转化及重点研发项目(项目编号:2016GH19);枣庄市科技计划项目(项目编号:2016GX31)

摘　　要：基于嵌套式双开口金属谐振环结构设计了一种太赫兹超材料吸收器.研究表明这种吸收器在0.2-2THz范围内呈现多频吸收的特性;通过改变开口尺寸和金属线宽发现:随着开口宽度和金属线宽的增加,吸收频率都会发生一定程度的蓝移;同时,当开口宽度为5um,金属线宽为4um时,器件吸收性能最佳,在1.42THz处吸收率高达98%.A kind of terahertz absorber based on nested split ring resonators （SRRs） was designed and calculated. The characteristics of multi - frequency absorption in the range from 0.2 to 2 THz was presented. By changing the gap and width of metal rings,it is found that all the absorption frequencies blue shifted when the size of gap and the width of SRRs were increased. Also, the absorption property of device was optmized at the case that the gap is Sum and the width of metal rings is 4μm. In such a case,the highest absorpticn approached 98% at the frequency of 1.42 THz.

关 键 词：太赫兹 超材料 吸收器 

分 类 号：O441[理学—电磁学] TB34[理学—物理]