Dual-Functional Terahertz Tunable Polarization Conversion By Graphene-VO2 Metasurfaces

We propose a dual-functional broadband tunable terahertz polarization converter metasurfaces. The designed structure is composed of a hybrid of electromagnetic materials and provides tunable polarization conversion in the reflection and transmission states. Not only does the polarization converter provide a wide range of polarization conversion from 5.34 to 7.80 THz with a high polarization conversion ratio (more than 0.97), but also is tunable and controllable.