Terahertz polarization conversion and sensing with double-layer chiral metasurface

Zhang Zi-Yang¹, Fan Fei^{1, †}, Li Teng-Fei¹, Ji Yun-Yun¹, Chang Sheng-Jiang^{2, ‡}

Simulative (a) PEA and (b) PRA spectra, experimental (c) PEA and (d) PRA spectra of the double-layer chiral metasurface with different film thicknesses.