Observing metamaterial induced transparency in individual Fano resonators with broken symmetry
Observing metamaterial induced transparency in individual Fano resonators with broken symmetry
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DOI：
10.1063/1.3659494
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发表时间：
2011-11-14
影响因子：
4
通讯作者：
Zhang, Weili
中科院分区：
文献类型：
--
作者：
Singh, Ranjan;Al-Naib, Ibraheem A. I.;Zhang, Weili
超材料诱导的透明性证明使用单独的开口环谐振器与两个间隙的相对侧。对于对称结构，只有一个低质量的偶极共振见证了在垂直入射与电场沿沿着谐振器间隙激发。一个间隙从中心的位移打破了对称性，并且激发了在对称结构中不可接近的高阶模式。在开口环谐振器中的模式之间的相干相互作用形成了直接以偶极谐振为中心的非常尖锐的窄带透明窗口。这种超材料可以促进太赫兹信号的延迟，存储和非线性应用的相干操纵。(C)2011年美国物理学会。[doi：10.1063/1.3659494]
Metamaterial induced transparency is demonstrated using individual split ring resonators with two gaps on opposite side. For the symmetric structure, only a low quality dipolar resonance is witnessed at a normal incidence excited with electric field along the resonator gaps. Displacement of one gap from the centre breaks the symmetry and a higher order mode, inaccessible in the symmetric structure, is excited. Coherent interaction among the modes in the split ring resonator forms an extremely sharp narrowband transparency window centred directly at the dipole resonance. Such metamaterial could facilitate coherent manipulation of terahertz signals for delay, storage, and nonlinear applications. (C) 2011 American Institute of Physics. [doi:10.1063/1.3659494]