Zhao, S.; Jiang, H.; Wang, J.; Zhu, W.; Zhao, W. Large-Range Switchable Asymmetric Transmission and Circular Conversion Dichroism in a VO2 Based Metasurface. Photonics2023, 10, 893.
Zhao, S.; Jiang, H.; Wang, J.; Zhu, W.; Zhao, W. Large-Range Switchable Asymmetric Transmission and Circular Conversion Dichroism in a VO2 Based Metasurface. Photonics 2023, 10, 893.
Zhao, S.; Jiang, H.; Wang, J.; Zhu, W.; Zhao, W. Large-Range Switchable Asymmetric Transmission and Circular Conversion Dichroism in a VO2 Based Metasurface. Photonics2023, 10, 893.
Zhao, S.; Jiang, H.; Wang, J.; Zhu, W.; Zhao, W. Large-Range Switchable Asymmetric Transmission and Circular Conversion Dichroism in a VO2 Based Metasurface. Photonics 2023, 10, 893.
Abstract
Reconfigurable chiral metasurfaces with dynamic polarization manipulation capability are highly required in optical integrated systems. In this paper, we simultaneously realized giant and large-range switchable asymmetric transmission (AT) and circular conversion dichroism (CCD) in a vanadium dioxide (VO2) based metasurface. The AT and CCD of the insulator VO2 based metasurface reach 0.95 and 0.92, respectively. Utilizing the insulator-to-metallic phase transition of VO2, the AT and CCD could be continuously switched to near zero. Furthermore, the physics mechanism of the giant and switchable AT and CCD are analyzed. The proposed metasurface with large-range switchable AT and CCD is promising in the applications of biochemistry detection, chiral imaging and biosensing.
Keywords
Active Metasurface; Phase change materials; Chiral effects; Dynamic polarization control
Subject
Physical Sciences, Optics and Photonics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
