A tunable terahertz metasurface with function of polarization conversion and circular dichroism

被引：2
|
作者：
Jia, Yang [1 ,2 ]
Zhang, Xin [1 ]
Wang, Guan [1 ]
Liu, Jia [1 ]
Yang, Shuang [1 ]
Feng, Hengli [1 ]
Miao, Fengjuan [2 ]
Gao, Yachen [1 ]
机构：
[1] Heilongjiang Univ, Sch Elect Engn, Harbin 150080, Heilongjiang, Peoples R China
[2] Qiqihar Univ, Coll Commun & Elect Engn, Qiqihar 161000, Heilongjiang, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2024年 / 564卷
关键词：
Metasurface; Circular dichroism; Polarization conversion; Graphene; PB phase; ABSORPTION;
D O I：
10.1016/j.optcom.2024.130490
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A tunable and multifunctional electromagnetic control metasurface is proposed. The metasurface comprises the graphene sheet and gold open ring, enabling multiband cross -polarization conversion (CPC) and line -to -circular polarization conversion (LTCPC). Simultaneously, it can achieve circular dichroism (CD) with amplitude of 0.99 at 2.28 THz, along with the capability for near -field imaging. The physical mechanism of operation is studied by analyzing surface current distribution and electric field. In addition, because the metasurface exhibits chiral characteristics, appropriate rotation can induce a phase gradient, facilitating a phase coverage of 0-360 degrees. Based on the tunable phase gradient of metasurface, anomalous reflection and vortex beams can be realized.
引用
收藏
页数：10
相关论文
共 50 条
  • [41] Frequency tunable circular polarization control of terahertz radiation
    Shimano, R
    Nishimura, H
    Sato, T
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2005, 44 (20-23): : L676 - L678
  • [42] Frequency tunable circular polarization control of Terahertz radiation
    Shimano, R. (shimano@phys.s.u-tokyo.ac.jp), 1600, Japan Society of Applied Physics (44): : 20 - 23
  • [43] Optical Circular Conversion Dichroism via Heterogeneous Planar Nanoplasmonic Metasurface
    Atefe Fazel Najafabadi
    Tavakol Pakizeh
    Plasmonics, 2018, 13 : 1721 - 1728
  • [44] Optical Circular Conversion Dichroism via Heterogeneous Planar Nanoplasmonic Metasurface
    Najafabadi, Atefe Fazel
    Pakizeh, Tavakol
    PLASMONICS, 2018, 13 (05) : 1721 - 1728
  • [45] A tunable encoder with circular dichroism and polarization encoding function based on a layered metastructure in the GHz range
    Wu, Chuan-Qi
    Sui, Jun-Yang
    Chen, Qi
    Tang, Xing-Zhou
    Zhang, Hai-Feng
    MATERIALS & DESIGN, 2025, 250
  • [46] Tunable circular dichroism and valley polarization in the modified Haldane model
    Vila, Marc
    Nguyen Tuan Hung
    Roche, Stephan
    Saito, Riichiro
    PHYSICAL REVIEW B, 2019, 99 (16)
  • [47] Multiband dual polarization conversion metasurface based on three-quarter circular-shape in the terahertz regime
    Majeed, Abdul
    Jinling, Zhang
    Khan, Hamza Asif
    Ishfaq, Muhammad
    Hayat, Babar
    RESULTS IN PHYSICS, 2024, 57
  • [48] A switchable and tunable multifunctional terahertz polarization converter based on a graphene metasurface
    Zhang, Xin
    Wang, Guan
    Liu, Jia
    Zuo, Shiyi
    Li, Meichen
    Yang, Shuang
    Jia, Yang
    Gao, Yachen
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2023, 25 (46) : 31948 - 31959
  • [49] Polarization insensitive tunable terahertz coding metasurface based on vanadium dioxide
    Wang, Zailin
    Li, Pengzhan
    Chen, Jinyu
    Liang, Wanlin
    Wu, Zhanyi
    Zhou, Qingli
    Zhang, Cunlin
    INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES IX, 2022, 12324
  • [50] Broadband and tunable terahertz polarization converter based on graphene composite metasurface
    Li, Nianchao
    Mei, Jinshuo
    Gong, Dagang
    Shia, Yuanchao
    OPTICS COMMUNICATIONS, 2022, 521
12345