Switchable asymmetric transmission with broadband polarization conversion in vanadium dioxide-assisted terahertz metamaterials
Zhichao Liu, Tianle Zhou, Gui Jin, Jiangbin Su, Bin Tang
Abstract
transitions from the metal to the insulating state, a dual-band AT effect can be realized for the presented metamaterials. Also, it is demonstrated that there is a broadband near-perfect orthogonal polarization conversion associated with the AT effect. And the operating mechanisms are elucidated by using the Fabry-Pérot-like cavity model and the electromagnetic field distributions. Moreover, the presented nanostructure exhibits a robust tolerance for the incidence angle. Our designed metamaterial may have potential applications for switchable multi-functional devices in terahertz regimes.
Topics & Concepts
Terahertz radiationBroadbandMetamaterialVanadium dioxideOptoelectronicsMaterials sciencePolarization (electrochemistry)Transmission (telecommunications)OpticsNanotechnologyChemistryPhysicsTelecommunicationsThin filmComputer sciencePhysical chemistryMetamaterials and Metasurfaces ApplicationsMillimeter-Wave Propagation and ModelingPlasmonic and Surface Plasmon Research