Terahertz broadband polarization converter based on metamaterials

Yonghua Li; Guozhong Zhao

doi:10.1117/12.2295794

12 January 2018 Terahertz broadband polarization converter based on metamaterials

Yonghua Li, Guozhong Zhao

Proceedings Volume 10622, 2017 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 106220L (2018) https://doi.org/10.1117/12.2295794
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

Based on the metamaterial composed of symmetrical split resonant ring, a broadband reflective terahertz polarization converter is proposed. The numerical simulation shows that it can rotate the polarization direction of linear polarized wave 90° in the range of 0.7-1.8THz and the polarization conversion ratio is over 90%. The reflection coefficient of the two electric field components in the diagonal direction is the same and the phase difference is 180° ,which leads to the cross-polarization rotation.In order to further study the physical mechanism of high polarization conversion, we analyze the surface current distribution of the resonant ring. The polarization converter has potential applications in terahertz wave plate and metamaterial antenna design.

Citation Download Citation

Yonghua Li and Guozhong Zhao "Terahertz broadband polarization converter based on metamaterials", Proc. SPIE 10622, 2017 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 106220L (12 January 2018); https://doi.org/10.1117/12.2295794

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