TY - GEN
T1 - Multi-functional High-Efficiency Terahertz Polarization Converter Based on Graphene Metasurface
AU - Hou, Yushan
AU - Zhang, Liuyang
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
PY - 2024
Y1 - 2024
N2 - In this paper, we propose a multi-functional and switchable broadband polarization converter in the terahertz (THz) band, which can switch between linear-to-linear polarization conversion and linear-to-circular polarization conversion modes via artificially tuning the Fermi energy level of graphene (Ef). When Ef is set to 0 eV, the polarization converter can transform linear polarized (LP) wave into its cross-polarized counterpart within the 0.53–1.41 THz range, exhibiting a remarkable relative bandwidth of 91%. Conversely, when Ef is set to 1 eV, the polarization converter can convert LP wave into right-handed circularly polarized (RCP) wave within the 0.7–1.6 THz band and left-handed circularly polarized (LCP) wave within the 1.8–3.1 THz band, with relative bandwidths of 78% and 53%, respectively. With these exceptional capabilities, this graphene metasurface-based polarization converter holds significant promise for a wide array of THz applications, including optical switches, modulators, communication systems, and sensors.
AB - In this paper, we propose a multi-functional and switchable broadband polarization converter in the terahertz (THz) band, which can switch between linear-to-linear polarization conversion and linear-to-circular polarization conversion modes via artificially tuning the Fermi energy level of graphene (Ef). When Ef is set to 0 eV, the polarization converter can transform linear polarized (LP) wave into its cross-polarized counterpart within the 0.53–1.41 THz range, exhibiting a remarkable relative bandwidth of 91%. Conversely, when Ef is set to 1 eV, the polarization converter can convert LP wave into right-handed circularly polarized (RCP) wave within the 0.7–1.6 THz band and left-handed circularly polarized (LCP) wave within the 1.8–3.1 THz band, with relative bandwidths of 78% and 53%, respectively. With these exceptional capabilities, this graphene metasurface-based polarization converter holds significant promise for a wide array of THz applications, including optical switches, modulators, communication systems, and sensors.
KW - Multilayered graphene
KW - Polarization converter
KW - THz metasurface
UR - https://www.scopus.com/pages/publications/85199665606
U2 - 10.1007/978-981-97-3786-4_26
DO - 10.1007/978-981-97-3786-4_26
M3 - 会议稿件
AN - SCOPUS:85199665606
SN - 9789819737857
T3 - Springer Proceedings in Physics
SP - 127
EP - 132
BT - Proceedings of the 5th China and International Young Scientist Terahertz Conference, Volume 1 - YTHZ 2024
A2 - Chang, Chao
A2 - Zhang, Yaxin
A2 - Zhao, Ziran
A2 - Zhu, Yiming
PB - Springer Science and Business Media Deutschland GmbH
T2 - 5th China and International Young Scientist Terahertz Conference, YTHZ 2024
Y2 - 22 March 2024 through 24 March 2024
ER -