Electromagnetically induced transparency in terahertz plasmonic metamaterials via dual excitation pathways of the dark mode
Electromagnetically induced transparency in terahertz plasmonic metamaterials via dual excitation pathways of the dark mode
复制标题
通过暗模式的双激发路径在太赫兹等离子体超材料中电磁诱导透明
DOI：
10.1063/1.3696306
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发表时间：
2012-03-26
影响因子：
4
通讯作者：
Zhang, Weili
中科院分区：
文献类型：
--
作者：
Liu, Xiaojun;Gu, Jianqiang;Zhang, Weili
我们观察到电磁感应透明（EIT）的激发和调谐的暗模式在平面太赫兹超材料的不同激发路径之间的干扰。EIT单胞由作为亮谐振器的切割线和作为暗元件的一对开口环谐振器（SRR）组成。当SRR对沿导线沿着平移而不改变谐振器之间的横向距离时，由电场和磁场两者激发暗模式谐振。激发暗模式的电和磁路径允许EIT共振的巨大幅度调制。
We observe the excitation and tuning of electromagnetically induced transparency (EIT) by the interference between different excitation pathways of the dark mode in a planar terahertz metamaterial. The EIT unit cell consists of a cut wire as the bright resonator and a pair of split ring resonators (SRRs) as the dark element. The dark mode resonance is excited by both the electric and magnetic fields when the SRR pair translates along the wire without altering the lateral distance between the resonators. The electric and magnetic pathways of exciting the dark mode allows for a giant amplitude modulation of the EIT resonance.