Enhanced circular dichroism based on the dual-chiral metamaterial in terahertz regime
Shao Jian1, Li Jie1, Wang Ying-Hua1, Li Jia-Qi1, Dong Zheng-Gao1, †, , Zhou Lin2
       

The polarization angle θ and the ellipticity of the transmitted wave. (a) The symmetric bilayer metamaterial (SBM). (b) The asymmetric bilayer metamaterial (ASBM).