Enhanced sensing performance by the plasmonic analog of electromagnetically induced transparency in active metamaterials
Enhanced sensing performance by the plasmonic analog of electromagnetically induced transparency in active metamaterials
复制标题
通过活性超材料中电磁感应透明的等离子体模拟增强传感性能
DOI：
10.1063/1.3488020
复制
发表时间：
2010-09-13
影响因子：
4
通讯作者：
Zhang, X.
中科院分区：
文献类型：
--
作者：
Dong, Zheng-Gao;Liu, Hui;Zhang, X.
为了提高类电磁感应透明(EIT)等离子体结构的传感性能，对金属超材料中EIT的增益辅助等离子体模拟进行了研究。结果表明，这种结构除了对周围介质的折射率起伏有很高的敏感性外，还可以大大提高这种活性类EIT超材料的优值系数，这归因于放大了窄的透明峰。
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.