Abstract
Herein, we present a tunable multifunctional reflection polarizer, based on a graphene metasurface, which is composed of an array of cross double-ellipse graphene patches. A dual band of linear-to-linear (LTL) polarization conversions is achieved due to the superimposition of the two reflection components with a near 0° or 180° phase difference, in the mid-infrared region. By carefully choosing the parameters, linear-to-circular polarization conversion and broadband of LTL polarization conversion (about 0.7 THz) are also realized. Also, the tunable responses of the proposed reflection polarizer are discussed under a different Fermi energy and electron scattering time. It is believed that our proposed polarizer can be widely used for multifunctional and tunable polarization conversion.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Qi Qiao, Yueke Wang, Guofeng Yang, Yu Fu, and Yongqi Liu
Opt. Mater. Express 11(9) 2952-2965 (2021)
Rui Zhang, Bing You, Shengchuan Wang, Kui Han, Xiaopeng Shen, and Weihua Wang
Opt. Express 29(16) 24804-24815 (2021)
Zhifei Yao, Mengjia Lu, Chunyang Zhang, and Yueke Wang
J. Opt. Soc. Am. B 36(12) 3302-3306 (2019)