Work

Enhanced sensing performance by the plasmonic analog of electromagnetically induced transparency in active metamaterials

Year: 2010

Type: article

Abstract: The gain-assisted plasmonic analog of electromagnetically induced transparency (EIT) in a metallic metamaterial is investigated for the purpose to enhance the sensing performance of the EIT-like plasmonic structure. The structure is composed of three bars in one unit, two of which are parallel to each other (dark quadrupolar element) but perpendicular to the third bar (bright dipolar element), The results show that, in addition to the high sensitivity to the refractive-index fluctuation of the surrounding medium, the figure of merit for such active EIT-like metamaterials can be greatly enhanced, which is attributed to the amplified narrow transparency peak.

Source: Applied Physics Letters

DOI: 10.1063/1.3488020

Authors: Zheng-Gao Dong, Hui Liu, Jing-Xiao Cao, Tao Li, Shu-Ming Wang, Shi-Ning Zhu, X. Zhang

Institutions: Southeast University, National Laboratory of Solid State Microstructures, Nanjing University, University of California, Berkeley

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Specialized Research Fund for the Doctoral Program of Higher Education of China

Awards: G1044987601, G115375849, G3567021017, 金属纳米缝-孔复合结构中磁等离极化激元近场光学性质的研究, 金属双环特异介质链中磁等离极化激元的激发与传播研究