石墨烯
太赫兹辐射
等离子体子
电磁感应透明
谐振器
光电子学
透明度(行为)
费米能量
费米能级
材料科学
光学
物理
纳米技术
计算机科学
计算机安全
量子力学
电子
作者
Haolan Zhao,Yinshuan Ren,Liang Fang,Hai Lin
标识
DOI:10.1016/j.rinp.2020.102971
摘要
Electromagnetic Induced transparency (EIT) has been considered as a possible manner to implement plasmonic devices for slow light and sensing applications. In this paper, we proposed a novel design of graphene waveguide structure, which provides a tunable EIT response. Numerical results reveal that the plasmon induced transparency spectral response occurs due to the interference between quasi-dark mode and quasi-bright mode which exist in the loaded graphene resonator of the device. The EIT peak frequency can be tuned by changing the Fermi level of the graphene. An elaborate analysis of the relationship between the transparency frequency and graphene’s Fermi level, in turn, proved the two-dimensional nature of the graphene plasmon. Compared with previous designs, the proposed design can work in the THz frequency and provides a much sharper EIT window which is quite useful for sensing applications.
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