A four-band and polarization-independent BDS-based tunable absorber with high refractive index sensitivity

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  • Xianglong Wu
    Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
  • Ying Zheng
    Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
  • Yao Luo
    Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
  • Jianguo Zhang
    Department of Physics and Electronic Engineering, Jinzhong University, Jinzhong 030619, China
  • Zao Yi
    Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
  • Xianwen Wu
    School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
  • Shubo Cheng
    School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei 434023, China
  • Wenxing Yang
    School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, Hubei 434023, China
  • Yang Yu
    College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
  • Pinghui Wu
    Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Quanzhou Normal University, Quanzhou 362000, China

Abstract

<jats:p>We proposed a four-band terahertz tunable narrow-band perfect absorber based on bulk Dirac semi-metallic (BDS) metamaterials with microstructure. The resonance frequency of the absorber can be adjusted by adjusting the Fermi level of BDS.</jats:p>

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