Broadband Terahertz Transmission Modulation Based on Hybrid Graphene-Metal Metamaterial

作     者：Lan-Ju Liang Zhang Zhang Xin Yan Xin Ding De-Quan Wei Qi-Li Yang Zhen-Hua Li Jian-Quan Yao 

作者机构：College of Precision Instrument and Opto-Electronics EngineeringTianjin UniversityTianjin 300072 School of Opto-Electronic EngineeringZaozhuang UniversityZaozhuang 277160 

出 版 物：《Journal of Electronic Science and Technology》 (电子科技学刊（英文版）)

年 卷 期：2018年第16卷第2期

页      面：98-104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：supported by the National Natural Science Foundation of China under Grants No.61701434 and No.61735010 the National Natural Science Foundation of Shandong Province under Grants No.ZR2017MF005 and No.ZR2018LF001 the Project of Shandong Province Higher Education Science and Technology Program under Grant No.J17KA087 the China Postdoctoral Science Foundation under Grant No.2015M571263 the Program of Independent and Achievement Transformation Plan for Zaozhuang under Grants No.2016GH19 and No.2016GH31 

主　　题：Graphene metamaterial modulator terahertz 

摘      要：A novel patterned metamaterial,composed of graphene layer and metal periodic array of split ring resonators （SRRs） and cross-shaped resonators （CSRs）, with broadband terahertz （THz） wave modulation was proposed and theoretically studied. It demonstrated that a broad passband high transmission of over 96.1% in the frequency range from 1.02 THz to 1.66 THz and two narrow band resonance frequencies f1 and f2 could be generated. The modulation depth of transmission was 29.2% when the graphene layer was covered on the metal metamaterial surface, and the modulation depth could be further increased by increasing the Fermi energy of graphene layer and reached approximately 79.5% at 1.0 eV in a broadband THz frequency range. The resonance frequencies of f1 and f2 were blue-shifted, and their modulation depths reached about 63.2% and 18%, respectively. These results show that the ultrathin graphene-metal metamaterial exhibits potential to achieve highperformance active THz devices and may offer widespread applications.