• 文献标题:   Tunable ultra-high-efficiency light absorption of monolayer graphene using critical coupling with guided resonance
  • 文献类型:   Article
  • 作  者:   JIANG XY, WANG T, XIAO SY, YAN XC, CHENG L
  • 作者关键词:  
  • 出版物名称:   OPTICS EXPRESS
  • ISSN:   1094-4087
  • 通讯作者地址:   Huazhong Univ Sci Technol
  • 被引频次:   26
  • DOI:   10.1364/OE.25.027028
  • 出版年:   2017

▎ 摘  要

We numerically demonstrate a novel monolayer graphene-based perfect absorption multi-layer photonic structure by the mechanism of critical coupling with guided resonance, in which the absorption of graphene can significantly reach 99% at telecommunication wavelengths. The highly efficient absorption and spectral selectivity can be obtained with designing structural parameters in the near-infrared region. Compared to previous works, we achieve the complete absorption of single-atomic-layer graphene in the perfect absorber with a lossless dielectric Bragg mirror, which not only opens up new methods of enhancing the light-graphene interaction, but also makes for practical applications in high-performance optoelectronic devices, such as modulators and sensors. (C) 2017 Optical Society of America