• 文献标题:   Tunable enhanced THz absorption in Fibonacci photonic crystals with graphene
  • 文献类型:   Article
  • 作  者:   ZHANG PS, DENG XH, LIU HF, DONG JM, YUAN JR
  • 作者关键词:  
  • 出版物名称:   EUROPEAN PHYSICAL JOURNAL D
  • ISSN:   1434-6060 EI 1434-6079
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1140/epjd/s10053-022-00488-2
  • 出版年:   2022

▎ 摘  要

We investigate the THz absorption properties of Fibonacci photonic crystals with graphene by using characteristics matrix method based on conductivity. We demonstrate that the structure can lead to perfect THz absorption because of strong photon localization in the defect layer of Fibonacci photonic crystals with graphene. By adjusting the incident angle, chemical potential, relaxation rate or the period number of Fibonacci photonic crystals, the maximum THz absorptivity can be tailored, and the absorptivity may be tuned continuously from 0 to 100%. The position of the THz absorption peaks can be tuned by changing the center wavelength or the thicknesses of structure layers. Moreover, the position of the THz absorption peaks can be tuned by changing the center wavelength or the thicknesses of structure layers. The proposed structure is easy to implement and has potential application in optoelectronic devices.