Broad-band Terahertz Polarization Conversion in a Planar Metasurface

Abstract

We numerically investigated a broad-band polarization conversion of linearly polarized THz in a planar metasurface. The unit cell of the proposed MM configuration is comprised of a C-shaped resonator. We studied the co -and cross-polarization transmission of the proposed geometry for different polarizations of the incident light starting from 00 to 450 in steps of 150. Our design promises a cross-polarization conversion of 40% in a broad frequency spectrum of 1.3 to 3.0 THz when the structure is rotated by 450 with respect to the incident THz.