基于手征超材料的90°THz 极化偏转器

doi:10.12066/j.issn.1007-2861.1679

Abstract

Abstract:

This paper proposes a novel chiral structure consisting of double L resonators fabricated on both sides of the dielectric substrate. Simulation results reveal that the structure can achieve broadband and multi-band 90° polarization rotation of x-polarization wave in a THz band. In particular, the chiral structure can realize 90° polarization rotation for x-polarized and y-polarized waves at 2.56 THz. Meanwhile, ellipticity of the linear polarization wave is about 0°. The physical mechanism of linearly polarized wave conversion based on electric fields is analyzed. The structure can also be used to design 90° polarization polarizer in other bands, for instance, microwave and near infrared regions.

Key words: liner polarization wave, polarization rotation, THz wave, chiral metamaterial

XU Kaikai, XIAO Zhongyin, LIU Dejun, TANG Jingyao, MA Xiaolong, WANG Zihua. 90° THz polarization rotator based on chiral metamaterials[J]. Journal of Shanghai University（Natural Science Edition）, 2017, 23(4): 517-523.

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90° THz polarization rotator based on chiral metamaterials

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