Huang, H.-F.; Wang, J.-Y. Terahertz Dielectric Metasurface for Reconfigurable Multifunctional Holographic Imaging with Dual-Mode Controlled by Graphene. Preprints2024, 2024072254. https://doi.org/10.20944/preprints202407.2254.v1
APA Style
Huang, H. F., & Wang, J. Y. (2024). Terahertz Dielectric Metasurface for Reconfigurable Multifunctional Holographic Imaging with Dual-Mode Controlled by Graphene. Preprints. https://doi.org/10.20944/preprints202407.2254.v1
Chicago/Turabian Style
Huang, H. and Jian-Yuan Wang. 2024 "Terahertz Dielectric Metasurface for Reconfigurable Multifunctional Holographic Imaging with Dual-Mode Controlled by Graphene" Preprints. https://doi.org/10.20944/preprints202407.2254.v1
Abstract
Metasurface constitutes one of the most promising technologies for holographic imaging; however, the work for terahertz (THz) metasurface holographic imaging is relatively limited. Here, we propose a THz dielectric geometric-propagation phase metasurface, which can operate dual-mode (reflection and transmission) and reconfigurable multifunctional holographic imaging. The dual-mode is realized by controlling the Fermi energy level (Ef) of the graphene integrated into the metasurface unit, and the reconfigurable three-channel holographic imaging in reflection or transmission mode are achieved by switching the feed polarization among left-handed circular polarization (LCP), right-handed circular polarization (RCP) and linear polarization (LP). The metasurface is designed based on the transmission mode, and a physical model for switching to the reflection mode is established. For the first time to the best of our knowledge, a reflection-transmission dynamic modulation THz holographic imaging metasurface has been developed. The holographic metasurface operates in transmission mode at Ef = 0.1 eV, and in reflection mode at Ef = 0.9 eV. Compared with recently published holographic imaging metasurfaces, the proposed metasurface offers the following advantages: high holographic efficiencies (42.5% to 49%), more holographic imaging channels, dynamic modulation dual-mode operations, and reconfigurability.
Engineering, Electrical and Electronic Engineering
Copyright:
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