中国物理B ›› 2023, Vol. 32 ›› Issue (3): 34211-034211.doi: 10.1088/1674-1056/ac9047

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A three-band perfect absorber based on a parallelogram metamaterial slab with monolayer MoS2

Wen-Jing Zhang(张雯婧)1,2, Qing-Song Liu(刘青松)1,2, Bo Cheng(程波)1,2, Ming-Hao Chao(晁明豪)1,2, Yun Xu(徐云)1,2, and Guo-Feng Song(宋国峰)1,2,†   

  1. 1 Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2022-06-21 修回日期:2022-08-21 接受日期:2022-09-08 出版日期:2023-02-14 发布日期:2023-03-03
  • 通讯作者: Guo-Feng Song E-mail:sgf@semi.ac.cn
  • 基金资助:
    Project supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB43010000), the National Natural Science Foundation of China (Grant Nos. 61835011 and 12075244), Key Research Projects of the Frontier Science of the Chinese Academy of Sciences (Grant No. QYZDY-SSW-JSC004), and the National Key Research and Development Program of China (Grant No. 2020YFB2206103).

A three-band perfect absorber based on a parallelogram metamaterial slab with monolayer MoS2

Wen-Jing Zhang(张雯婧)1,2, Qing-Song Liu(刘青松)1,2, Bo Cheng(程波)1,2, Ming-Hao Chao(晁明豪)1,2, Yun Xu(徐云)1,2, and Guo-Feng Song(宋国峰)1,2,†   

  1. 1 Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-06-21 Revised:2022-08-21 Accepted:2022-09-08 Online:2023-02-14 Published:2023-03-03
  • Contact: Guo-Feng Song E-mail:sgf@semi.ac.cn
  • Supported by:
    Project supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB43010000), the National Natural Science Foundation of China (Grant Nos. 61835011 and 12075244), Key Research Projects of the Frontier Science of the Chinese Academy of Sciences (Grant No. QYZDY-SSW-JSC004), and the National Key Research and Development Program of China (Grant No. 2020YFB2206103).

摘要: As a two-dimensional (2D) material, monolayer MoS2 which limits its optical applications has a low absorption efficiency. In this paper, we propose a three-band perfect metamaterial absorber in the visible light range based on monolayer MoS2. The peak absorptivity of the structure at each resonance wavelength is nearly perfect, moreover, the light absorption of monolayer MoS2 is obviously enhanced at the three resonant wavelengths. The dielectric-dielectric-metal structure we designed produces the coupling of Fabry-Perot resonance and high-order diffraction guided-mode resonance at different absorption peaks, which has been proved by the slab waveguide theory. In addition, the multi-modal absorption phenomenon is explained by extracting the equivalent impedance. The results show that we can adjust the absorption peak wavelength by regulating the parameters of the structure. This structure not only provides an idea for enhancing the interaction between light and two-dimensional materials but also has potential applications for optical detection devices.

关键词: metamaterial, perfect absorber, monolayer MoS2, high-order diffraction

Abstract: As a two-dimensional (2D) material, monolayer MoS2 which limits its optical applications has a low absorption efficiency. In this paper, we propose a three-band perfect metamaterial absorber in the visible light range based on monolayer MoS2. The peak absorptivity of the structure at each resonance wavelength is nearly perfect, moreover, the light absorption of monolayer MoS2 is obviously enhanced at the three resonant wavelengths. The dielectric-dielectric-metal structure we designed produces the coupling of Fabry-Perot resonance and high-order diffraction guided-mode resonance at different absorption peaks, which has been proved by the slab waveguide theory. In addition, the multi-modal absorption phenomenon is explained by extracting the equivalent impedance. The results show that we can adjust the absorption peak wavelength by regulating the parameters of the structure. This structure not only provides an idea for enhancing the interaction between light and two-dimensional materials but also has potential applications for optical detection devices.

Key words: metamaterial, perfect absorber, monolayer MoS2, high-order diffraction

中图分类号:  (Optical waveguides and couplers)

  • 42.79.Gn
81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media) 02.70.Bf (Finite-difference methods)