中国物理B ›› 2022, Vol. 31 ›› Issue (6): 64210-064210.doi: 10.1088/1674-1056/ac4f5b

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Switchable terahertz polarization converter based on VO2 metamaterial

Haotian Du(杜皓天)1, Mingzhu Jiang(江明珠)1,2, Lizhen Zeng(曾丽珍)1, Longhui Zhang(张隆辉)1, Weilin Xu(徐卫林)1, Xiaowen Zhang(张小文)1, and Fangrong Hu(胡放荣)1,†   

  1. 1 Guangxi Key Laboratory of Automatic Detecting Technology and Instrument, Guilin University of Electronic Technology, Guilin 541004, China;
    2 Guilin Institute of Information Technology, Guilin 541004, China
  • 收稿日期:2021-12-10 修回日期:2022-01-18 接受日期:2022-01-27 出版日期:2022-05-17 发布日期:2022-05-26
  • 通讯作者: Fangrong Hu E-mail:hufangrong@sina.com
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China (Grant Nos. 62065005, 61565004, 11774288, and 62003107), the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant Nos. 2018GXNSFAA050043, 2020GXNSFDA238019, 2019JJB110033, and 2017GXNSFBA198029), the Innovation Project of Guangxi Graduate Education, China (Grant Nos. YCSW2021188, YCBZ2021071, and 2020YCXB04), the Foundation from Guangxi Key Laboratory of Automatic Detecting Technology and Instrument (Grant No. YQ21101); and the Research and Development Project in Hunan Province, China (Grant No. 2020SK2111).

Switchable terahertz polarization converter based on VO2 metamaterial

Haotian Du(杜皓天)1, Mingzhu Jiang(江明珠)1,2, Lizhen Zeng(曾丽珍)1, Longhui Zhang(张隆辉)1, Weilin Xu(徐卫林)1, Xiaowen Zhang(张小文)1, and Fangrong Hu(胡放荣)1,†   

  1. 1 Guangxi Key Laboratory of Automatic Detecting Technology and Instrument, Guilin University of Electronic Technology, Guilin 541004, China;
    2 Guilin Institute of Information Technology, Guilin 541004, China
  • Received:2021-12-10 Revised:2022-01-18 Accepted:2022-01-27 Online:2022-05-17 Published:2022-05-26
  • Contact: Fangrong Hu E-mail:hufangrong@sina.com
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China (Grant Nos. 62065005, 61565004, 11774288, and 62003107), the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant Nos. 2018GXNSFAA050043, 2020GXNSFDA238019, 2019JJB110033, and 2017GXNSFBA198029), the Innovation Project of Guangxi Graduate Education, China (Grant Nos. YCSW2021188, YCBZ2021071, and 2020YCXB04), the Foundation from Guangxi Key Laboratory of Automatic Detecting Technology and Instrument (Grant No. YQ21101); and the Research and Development Project in Hunan Province, China (Grant No. 2020SK2111).

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摘要： A switchable terahertz (THz) polarization converter based on vanadium dioxide (VO2) metamaterial is proposed. It is a 5-layer structure which containing metal split-ring-resonator (SRR), the first polyimide (PI) spacer, VO2 film, the second PI spacer, and metal grating. It is an array structure and the period in x and y directions is 100 μm. The performance is simulated by using finite integration technology. The simulation results show that, when the VO2 is in insulating state, the device is a transmission polarization converter. The cross-linear polarization conversion can be realized in a broadband of 0.70 THz, and the polarization conversion rate (PCR) is higher than 99%. Under thermal stimulus, the VO2 changes from insulating state to metallic state, and the device is a reflective polarization converter. The linear-to-circular polarization conversion can be successfully realized in a broadband of 0.50 THz, and the PCR is higher than 88%.

关键词: switchable, terahertz (THz) metamaterial, polarization conversion, vanadium dioxide (VO2)

Abstract: A switchable terahertz (THz) polarization converter based on vanadium dioxide (VO2) metamaterial is proposed. It is a 5-layer structure which containing metal split-ring-resonator (SRR), the first polyimide (PI) spacer, VO2 film, the second PI spacer, and metal grating. It is an array structure and the period in x and y directions is 100 μm. The performance is simulated by using finite integration technology. The simulation results show that, when the VO2 is in insulating state, the device is a transmission polarization converter. The cross-linear polarization conversion can be realized in a broadband of 0.70 THz, and the polarization conversion rate (PCR) is higher than 99%. Under thermal stimulus, the VO2 changes from insulating state to metallic state, and the device is a reflective polarization converter. The linear-to-circular polarization conversion can be successfully realized in a broadband of 0.50 THz, and the PCR is higher than 88%.

Key words: switchable, terahertz (THz) metamaterial, polarization conversion, vanadium dioxide (VO2)

中图分类号:  (Filters, zone plates, and polarizers)

  • 42.79.Ci
81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media) 84.30.Vn (Filters)