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A Dual-Frequency Terahertz Metasurface Capable of Distinguishing the Handedness of Circularly Polarized Light
| Content Provider | MDPI |
|---|---|
| Author | Yang, Bowei Ouyang, Mingzhao Ren, Hang Ma, Chenhao Zhao, Yu Zhang, Yuhui Fu, Yuegang |
| Copyright Year | 2022 |
| Description | 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. |
| Starting Page | 736 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings12060736 |
| Journal | Coatings |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-27 |
| Access Restriction | Open |
| Subject Keyword | Coatings Terahertz Circularly Polarized Detection Dual-frequency |
| Content Type | Text |
| Resource Type | Article |
