Resonant transparency of a planar anapole metamaterial at terahertz frequencies

作     者：XIANGJUN LI JIE YIN JIANJUN LIU FANGZHOU SHU TINGTING LANG XUFENG JING ZHI HONG 

作者机构：Centre for THz ResearchChina Jiliang UniversityHangzhou 310018China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2021年第9卷第2期

页      面：125-130页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China(61875179,61875251,12004362) Primary Research and Development Plan of Zhejiang Province(2019C03114) 

主　　题：planar transparency resonant 

摘      要：Anapole metamaterials have attracted growing attention in recent years due to their unique nonradiating and nontrivial properties. Although anapole modes have been demonstrated in metamaterials with threedimensional structures, the design and realization of planar anapole metamaterials in a wide frequency range is still a big challenge. Here we propose and experimentally demonstrate a planar anapole metamaterial consisting of dumbbell-shaped apertures on a stainless-steel sheet at terahertz frequencies. The planar metamaterial can generate a resonant transparency in the terahertz spectrum due to the excitation of the anapole ***, the frequency of anapole-induced resonant transparency can be tuned easily in the range of 0.15–0.93 THz by simply varying one geometric parameter of the dumbbell apertures. We anticipate that the resonant transparency in planar anapole metamaterials can be potentially used in filters, sensors, or other photonic devices.