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Special Issue:
SPECIAL TOPIC —Terahertz physics
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| SPECIAL TOPIC—Terahertz physics |
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Polarization conversion metasurface in terahertz region |
| Chen Zhou(周晨)1, Jiu-Sheng Li(李九生)1,2 |
1 Centre for THz Research, China Jiliang University, Hangzhou 310018, China;
2 China Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, China |
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Abstract Polarization conversion is a very important electromagnetic wave manipulation method. In this paper, we investigate a high-efficiency linear-to-circular polarization and cross-polarization converter by utilizing coding metasurface. The coding particle consists of top layer metal pattern and bottom metal plate sandwiched with square F4B dielectric, which can manipulate the linear-to-circular polarization and cross-polarization converter of the reflected wave simultaneously. In the terahertz frequency range of 1.0 THz-2.0 THz, the reflection magnitudes reach approximately 90% and the axial ratio is less than 3 dB. The proposed polarization converter may lead to advances in a variety of applications such as security, microscopy, information processing, stealth technology, and data storage.
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Received: 29 March 2020
Revised: 24 April 2020
Accepted manuscript online:
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PACS:
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87.50.-a
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(Effects of electromagnetic and acoustic fields on biological systems)
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87.50.up
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(Dosimetry/exposure assessment)
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87.10.Vg
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(Biological information)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2016YFF0200306) and the National Natural Science Foundation of China (Grant Nos. 61871355 and 61831012). |
Corresponding Authors:
Jiu-Sheng Li
E-mail: jshli@126.com
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Cite this article:
Chen Zhou(周晨), Jiu-Sheng Li(李九生) Polarization conversion metasurface in terahertz region 2020 Chin. Phys. B 29 078706
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