Applied Sciences | |
Deep Electrical Modulation of Terahertz Wave Based on Hybrid Metamaterial-Dielectric-Graphene Structure | |
Xin Zhang1  Hong-Liang Cui1  Man Zhang2  Yong Tan3  Suihu Dang3  Shijian Huang3  Liangping Xia3  Wenjuan Yan3  | |
[1] Chongqing Key laboratory of Multi-Scale manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China;School of Electronic Information Engineering, Yangtze Normal University, Chongqing 408100, China; | |
关键词: terahertz; modulation; graphene; metamaterial; | |
DOI : 10.3390/app9030507 | |
来源: DOAJ |
【 摘 要 】
A terahertz modulation structure based on hybrid metamaterial and graphene is proposed and demonstrated in this work. The metamaterial with a square slit ring array excites terahertz resonance in the slits and enhances the interaction between the terahertz wave and graphene. The graphene layer acting as the active material is tuned by the applied electrical field. With the separation by a dielectric layer between the graphene and the metallic structure, the resonant frequency and transmitted energy are both modulated by the graphene. Experimental result indicates that the modulation depth of the terahertz transmitted amplitude is 65.1% when the applied modulation voltage is tuned 5 V.
【 授权许可】
Unknown