Chinese Journal of Quantum Electronics ›› 2023, Vol. 40 ›› Issue (3): 301-318.doi: 10.3969/j.issn.1007-5461.2023.03.002

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Research progress of tunable terahertz metamaterial absorbers

ZHANG Ruoya 1 , ZHU Qiaofen 1*, ZHANG Yan 2*   

  1. ( 1 Hebei International Joint Research Center for Computational Optical Imaging and Intelligent Sensing, Hebei Computational Optical Imaging and Photoelectric Detection Technology Innovation Center, School of Mathematics and Physics Science and Engineering, Hebei University of Engineering, Handan 056038, China; 2 Beijing Advanced Innovation Center for Imaging Theory and Technology, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing Key Laboratory of Metamaterials and Devices, Department of Physics, Capital Normal University, Beijing 100048, China )
  • Received:2022-09-28 Revised:2022-10-28 Published:2023-05-28 Online:2023-05-28

Abstract: Terahertz metamaterial absorber has the advantages of strong absorption, thin thickness and light weight, and has been widely used in stealth materials, frequency selective surfaces, terahertz imaging, communication sensing, and so on. However, as for the traditional terahertz metamaterial absorbers based on metal-patch, once they are processed, their absorption performance will be unchangeable. To solve this problem, researchers have designed tunable terahertz absorbers by adding active metamaterials. Combined with the research status of tunable terahertz metamaterial absorbers at home and abroad, this paper classifies and expounds several typical of tunable terahertz metamaterial absorbers, focusing on the research work of single-band, multi-band, broadband, and switchable dualfunction terahertz metamaterial absorbers, and finally analyzes their future development trends.

Key words: optoelectronics, tunable absorber, terahertz wave, active metamaterial

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