二维函数光子晶体中的类Dirac点及带隙结构  

Dirac-Like Points and Band Gap Structure inTwo-Dimensional Functional Photonic Crystals

作　　者：任明丽 杨涪铨 刘晗[1] 韩梦 朱翔久 姜明奇 吴向尧[1] REN Mingli;YANG Fuquan;LIU Han;HAN Meng;ZHU Xiangjiu;JIANG Mingqi;WU Xiangyao(College of Physics,Jilin Normal University,Siping 136000,Jilin Province,China)

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《吉林大学学报（理学版）》2021年第5期1260-1266,共7页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:61275047);吉林师范大学科技创新基金(批准号:研创新201937)

摘　　要：设计一种二维函数光子晶体,该光子晶体仅需通过改变外加的光强分布或电场分布,即可改变其介质柱介电常数的函数形式,从而获得所需的带隙结构.选取不同介质柱半径及不同介电常数函数形式的二维函数光子晶体结构,通过数值计算得到类Dirac点和带隙结构,所得结论可为光学器件的设计提供理论依据.A two-dimensional functional photonic crystal was designed.The photonic crystal could change the functional form of the dielectric constant of the dielectric column only by changing the distribution of the external light intensity or the distribution of the electric field,so as to obtain the required band gap structure.The band gap structures of two-dimensional functional photonic crystals with different dielectric column radii and different dielectric constant functions were selected,and the Dirac-like point and band gap structures were obtained by numerical calculation.The conclusions could provide theoretical basis for the design of optical devices.

关 键 词：二维函数光子晶体 函数型介电常数 完全带隙 类Dirac点 

分 类 号：O436[机械工程—光学工程]