A kind of graphene film metamaterial for terahertz absorbers

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• 作者：Run-mei Gao 高润梅 ; Zong-cheng Xu 续宗成 ; Chun-feng Ding 丁春峰…
• 刊名：Optoelectronics Letters
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：12
• 期：1
• 页码：43-46
• 全文大小：712 KB
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• 作者单位：Run-mei Gao 高润梅 (1) (2)
  Zong-cheng Xu 续宗成 (1)
  Chun-feng Ding 丁春峰 (1)
  Jian-quan Yao 姚建铨 (1)
  
  1. Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, China
  2. College of Science, Guilin University of Technology, Guilin, 541004, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Chinese Library of Science
  
• 出版者：Tianjin University of Technology, co-published with Springer-Verlag GmbH
• ISSN：1993-5013

文摘

A kind of functional graphene thin film metamaterial on a metal-plane separated by a thick dielectric layer is designed for terahertz (THz) absorbers. We investigate the properties of the graphene metamaterial with different interlayers in the 0–3 THz range. The simulation results show that the absorption rate reaches up to 99.9% at the frequency of 1.917 THz. Changing the period to 80 μm×18 μm can get a narrow-band high quality factor (Q) absorber. We present a novel theoretical interpretation based on the standing wave field theory, which shows that the coherent superposition of incident and reflection rays produces standing waves, and the field energy is localized inside the thick spacers and dissipates through the metal-planes. This work has been supported by the National Natural Science Foundation of China (Nos.61205096 and 11364010), and the Science Foundation of Education Department of Guangxi in China (No.200911LX17).