涂覆石墨烯的电介质纳米盘的表面等离激元回音壁模特性  

Surface Plasmon Polariton Whispering-Gallery-Mode Properties of Dielectric Nanodisks Covered by Graphene Monolayer

作　　者：陈厚波 邱伟彬[1] 黄艺馨 唐一鑫 邱平平 王加贤[1] 阚强[2] 潘教青[2] CHEN Houbo;QIU Weibin;HUANG Yixin;TANG Yixin;QIU Pingping;WANG Jiaxian;KAN Qiang;PAN Jiaoqing(College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China;Institute of Semiconductors, Chinese Academy of Science, Beijing 100083, China)

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021 [2]中国科学院半导体研究所,北京100083

出　　处：《华侨大学学报（自然科学版）》2017年第6期842-847,共6页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(6137805);福建省泉州市科技基金资助项目(Z1424009);中国科学院半导体重点实验室开放基金资助项目(KLSMS-1201);华侨大学研究生科研创新能力培育计划资助项目(1400201017)

摘　　要：提出涂覆单层石墨烯的电介质纳米盘结构,并利用有限元方法数值解析这种纳米结构的表面等离子激元回音壁模的电磁场特性.计算并分析品质因子(Q值)、模式体积随着电介质纳米盘半径大小、石墨烯化学势和谐振频率的变化规律.结果表明:当纳米盘的半径为5nm,石墨烯化学势为0.9eV时,其品质因子高达195,对应模式体积小于2×10-7(λ0/2n)3.Graphene monolayer covered dielectric nanodisks are proposed in this paper.The surface plasmonic polariton whisperinggallery mode electromagnetic field properties of the proposed nano structures are numerically investigated by using finite element method.The quality factor,mode volume and Purcell factor of the optical modes are calculated as a function of dielectric nanodisks radius size,chemical potential of graphene and resonant frequency.Calculation results showed that a quality factor as high as195,and a mode volume of less than2×10-7(λ0/2n)3is achieved in a dielectric nanodisk with radius of5nm,where the chemical potential is0.9eV.

关 键 词：光学器件 光学谐振腔 表面等离子激元 石墨烯 回音壁模 

分 类 号：O436[机械工程—光学工程]