Electromagnetically Induced Transparency Analogue by Self-Complementary Terahertz Meta-Atom
Electromagnetically Induced Transparency Analogue by Self-Complementary Terahertz Meta-Atom
复制标题
DOI：
10.1002/adom.201500620
复制
发表时间：
2016-04-01
影响因子：
9
通讯作者：
Lee, Hojin
中科院分区：
文献类型：
--
作者：
Jung, Hyunseung;In, Chihun;Lee, Hojin
近年来，许多研究者试图从超材料阵列中实现电磁感应透明（EIT）现象，用于慢光器件、新型光通信系统和非线性光学器件等有吸引力的应用。迄今为止报道的大多数超材料激活的EIT类似物都是基于明暗元原子之间的相消干涉。无论它们是在同一平面上还是在平面外，只有通过打破亮原子和暗原子之间的对称性才能获得类似eit的性质。在本研究中，通过在单个元原子内结合断线谐振器及其伪互补模式，开发了一种新的自互补太赫兹元原子。测量结果证实，通过控制入射太赫兹波在自互补元原子胞内引起的电场焦点，所提出的元原子可以在单个单元胞内表现出类似eit的现象，这与数值模拟和理论强迫振荡模型预测的结果一致。
In the past years, many researchers have tried to realize the electromagnetically induced transparency (EIT) phenomena from the metamaterial arrays for the attractable applications such as slow light devices, novel optical communication systems, and nonlinear optical devices. Most of metamaterial enabled EIT analogues reported so far are based on the destructive interference between the bright and dark meta-atoms. Whether they are located on the same plane or off the plane, EIT-like properties can be achieved only by breaking the symmetry between the bright and dark meta-atoms. In this study, a novel self-complimentary terahertz meta-atom is developed by combining cut-wire resonators and its pseudo-complimentary pattern within a single meta-atom. From the measurement results, it is verified that the proposed meta-atom can exhibit EIT-like phenomenon within a single unit cell by controlling the focus of the electric field induced by the incident terahertz waves within the self-complimentary meta-atom cell as predicted by the numerical simulation as well as by the theoretical forced oscillation model.