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- Title
A Dual-Frequency Terahertz Metasurface Capable of Distinguishing the Handedness of Circularly Polarized Light.
- Authors
Yang, Bowei; Ouyang, Mingzhao; Ren, Hang; Ma, Chenhao; Zhao, Yu; Zhang, Yuhui; Fu, Yuegang
- Abstract
Circularly polarized light can present more optical properties of chiral materials and is widely used to analyze and detect biomolecules. In this paper, a dual-frequency terahertz circular polarization detection structure, which is based on multilayer metamaterials, is proposed. The proposed structure consists of a dual-frequency quarter-wave plate, a polyimide spacer, and a filter. The simulation results show that the structure can distinguish the handedness of circularly polarized light by filtering. The extinction ratios are 4 dB and 5.26 dB at 0.952 THz and 1.03 THz, respectively, and the maximum transmittance efficiency reaches 40%. Given the advantages of easy integration and dual-frequency operation, our design is bound to facilitate the development of multi-frequency detection in biomedical imaging devices.
- Subjects
HANDEDNESS; SUBMILLIMETER waves; LIGHT filters; CIRCULAR polarization; OPTICAL properties; METAMATERIALS
- Publication
Coatings (2079-6412), 2022, Vol 12, Issue 6, p736
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings12060736