Electrically active manipulation of electromagnetic induced transparency in hybrid terahertz metamaterial
Electrically active manipulation of electromagnetic induced transparency in hybrid terahertz metamaterial
复制标题
混合太赫兹超材料中电磁感应透明度的电主动操纵
DOI:
10.1364/ome.6.003075
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发表时间:
2016-10
影响因子:
2.8
通讯作者:
Jiuxing Jiang
中科院分区:
文献类型:
--
作者:
Xunjun He;Xingyu Yang;Shaopeng Li;Shuang Shi;Fengmin Wu;Jiuxing Jiang
In this paper, we numerically demonstrate that an actively controllable electromagnetic induced transparency (EIT) behavior can be obtained in a hybrid terahertz metamaterial. A unit cell of the hybrid metamaterial consists of a metallic split-ring resonator surrounded by a concentric graphene close-ring resonator, serving as superradiant and subradiant modes, respectively. The EIT-like effect results from the destructive interference caused by strong near field coupling between superradiant and subradiant mode resonators. A classical two-particle model is employed to theoretically study EIT-like behavior in the hybrid metamaterial, and the analytic results agree excellently with our numerical results. More importantly, by tuning Fermi energy based on electrical doping, the hybrid metamaterial can realize switching, modulation, and slow-light capabilities. Therefore, these results would exhibit potential applications in light storage and compact devices.
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