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Multi-Band High-Efficiency Multi-Functional Polarization Controller Based on Terahertz Metasurface
- Source :
- Nanomaterials, Vol 12, Iss 18, p 3189 (2022)
- Publication Year :
- 2022
- Publisher :
- MDPI AG, 2022.
-
Abstract
- Electromagnetic metasurfaces with excellent electromagnetic wave regulation properties are promising for designing high-performance polarization control devices, while the application prospect of electromagnetic metasurfaces is limited because of the current development situations of the complex structure, low conversion efficiency, and narrow working bandwidth. In this work, we design a type of reflective terahertz metasurface made of a simple structure that can achieve multiple polarization modulation with high efficiency. It is shown that the presented metasurface can realize ultra-broadband, cross-polarization conversion with the relative working bandwidth reaching 94% and a conversion efficiency of over 90%. In addition, the proposed metasurface can also efficiently accomplish different polarization conversion functions, such as linear-to-linear, linear-to-circular, or circular-to-linear polarization conversion in multiple frequency bands. Due to the excellent properties, the designed metasurface can be used as a high-efficiency multi-functional polarization modulation device, and it has important application value in terahertz imaging, communication, biological detection, and other fields.
- Subjects :
- terahertz
metasurface
polarization controller
multi-functional
Chemistry
QD1-999
Subjects
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 12
- Issue :
- 18
- Database :
- Directory of Open Access Journals
- Journal :
- Nanomaterials
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.0853dbf17e942eb8c25777601b01fb9
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/nano12183189