电磁超表面高灵敏度太赫兹传感器的设计  

Research on high sensitivity THz sensor based on electromagnetic supersurface

作　　者：陈淑瑜[1] 韦德泉 CHEN Shuyu;WEI Dequan(College of Mechanical and Electrical Engineering,Zaozhuang University, Zaozhuang Shandong 277160,China;College of Optronics Electronic Engineering,Zaozhuang University, Zaozhuang Shandong 277160,China)

机构地区：[1]枣庄学院机电工程学院,山东枣庄277160 [2]枣庄学院光电工程学院,山东枣庄277160

出　　处：《激光杂志》2019年第4期18-22,共5页Laser Journal

基　　金：国家自然科学基金项目(61701434);山东省自然科学基金(ZR2017MF005; ZR2018LF001);山东省高等学校科技计划项目(J17KA087);枣庄市科技成果转化及重点研发项目(2016GH19);枣庄市科技计划项目(2016GX31)

摘　　要：基于电磁超表面传输特性设计高灵敏度的太赫兹传感器。数值仿真当覆盖材料的厚度一定时,随着覆盖材料折射率的增加,相应的谐振频率偏移量也随之呈线性增大,计算得到传感器的灵敏度为0. 026 THz/RIU。当覆盖材料的折射率一定时,随着覆盖材料厚度的增加,相应的谐振频率偏移量也会增大。材料的折射率不变,则说明传感器的灵敏度也增大了。但是在增大一定程度后,灵敏度会趋近于饱和。并且超表面结构模型的衬底厚度越小,传感器的灵敏度越大。研究结论为太赫兹传感器的研究提供参考。Summary: Design of high sensitivity terahertz sensor based on electromagnetic supersurface transmission characteristics. Numerical simulation When lhe thickness of the covering material is certain, the coiTesponding resonant frequency offset increases linearly with the increase of the refractive index of the covering material, and the sensitivity of the sensor is calculated to be 0.026 TH/RIU. When the refractive index of the covering material is fixed, the corresponding resonant frequency offset will increase with the increase of the thickness of the covering material. The constant refractive index of the material indicates that the sensitivity of the sensor has also increased. However, after increasing to a certain extent, the sensitivity will approach saturation. And the smaller the substrate thickness of the supersurface structure model, the greater the sensitivity of the sensor. The conclusion provides reference for the research of terahertz sensor.

关 键 词：太赫兹 传感器 超材料 CST 

分 类 号：O441[理学—电磁学] TB34[理学—物理]