A Dual-Frequency Terahertz Metasurface Capable of Distinguishing the Handedness of Circularly Polarized Light
Source abstract
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.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Terahertz technology and applications · Millimeter-Wave Propagation and Modeling
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
Key Laboratory of Optoelectronic Measurement and Optical Information Transmission Technology of Ministry of Education, Changchun University of Science and Technology, Changchun 130022, China
Key Laboratory of Advanced Optical System Design and Manufacturing Technology of the Universities of Jilin Province, Changchun 130022, China
Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), Chinese Academy of Sciences, Changchun 130022, China
Funding
111 Project of China · Science and technology research project of Education Department of Jilin Province · National Natural Science Foundation of China · Jilin Province Science and Technology Development Plan Project · Changchun University of Science and Technology Youth Science Fund Project
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