Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators

doi:10.1364/OME.7.001950

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	Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators
	Zhao, ZY; Zheng, XB; Peng, W; Zhao, HW; Zhang, JB; Luo, ZJ; Shi, WZ
刊名	OPTICAL MATERIALS EXPRESS
	2017
卷号	7 期号:6 页码:1950-1961
关键词	Plasmon-induced Transparency Electromagnetically Induced Transparency Planar Metamaterial Analog Optics
ISSN号	2159-3930
DOI	10.1364/OME.7.001950
文献子类	期刊论文
英文摘要	We demonstrate a localized slow light phenomenon in a symmetry broken metamolecule (MM) of conductively coupled dark resonators at a terahertz band. Under a dark-mode excitation condition, the single mode resonance becomes dual modes by breaking the uniaxial symmetry of MM. Thus, a transparency window exists in between dual modes. An interaction of V-shaped plasmonic antenna-type (VA) resonances results in a plasmoninduced transparency (PIT) when the asymmetric deviation is below 13 ae m. A maximum 25.9 ps group-delay of incident THz pulse is observed at the transparency window. When the asymmetric deviation is beyond 13 mu m, one excitation pathway switches from VA resonance to the inductor-capacitor (LC) resonance, which dominates the high-frequency side-mode. Then, the PIT effect transfers to the PIT-like behavior and the slow light phenomenon vanishes. The aforementioned discovery allows for a speed modulation of slow light via symmetry breaking in MM. (C) 2017 Optical Society of America
WOS关键词	PLASMON-INDUCED TRANSPARENCY ; ELECTROMAGNETICALLY INDUCED TRANSPARENCY ; PLANAR METAMATERIAL ; ANALOG ; OPTICS
语种	英语
WOS记录号	WOS:000404733900022
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/28718]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Zhao, ZY,Zheng, XB,Peng, W,et al. Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators[J]. OPTICAL MATERIALS EXPRESS,2017,7(6):1950-1961.
APA	Zhao, ZY.,Zheng, XB.,Peng, W.,Zhao, HW.,Zhang, JB.,...&Shi, WZ.(2017).Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators.OPTICAL MATERIALS EXPRESS,7(6),1950-1961.
MLA	Zhao, ZY,et al."Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators".OPTICAL MATERIALS EXPRESS 7.6(2017):1950-1961.