Terahertz Reconfigurable Metasurface for Dynamic Non-Diffractive Orbital Angular Momentum Beams using Vanadium Dioxide
| Autor: | Weijun Hong, Jianfeng Zhu, Shufang Li, Ling Wang, David McGloin, Chen Zhang, Li Deng, Yang Yang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Applied optics. Photonics
Angular momentum Terahertz radiation Physics::Optics topological charge (TC) 02 engineering and technology 01 natural sciences 010309 optics Optics reconfigurable metasurface 0103 physical sciences lcsh:QC350-467 Electrical and Electronic Engineering Topological quantum number Physics business.industry Reconfigurability lcsh:TA1501-1820 Ranging Radius non-diffractive beam Microwave transmission 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Terahertz (THz) orbital angular momentum (OAM) 0210 nano-technology business Beam (structure) lcsh:Optics. Light |
| Zdroj: | IEEE Photonics Journal, Vol 12, Iss 3, Pp 1-12 (2020) |
| ISSN: | 1943-0655 |
| Popis: | Orbital angular momentum (OAM) generation based on metasurfaces has attracted tremendous interest due to its potential in capacity enhancement of high-speed wireless communication systems. Reconfigurability is one of the key desired characteristics for the design of future metasurfaces. In this paper, a metasurface taking advantage of vanadium dioxide (VO2) is proposed. The proposed design can generate a non-diffractive OAM beam and achieve the multiple reconfigurability of the topological charge, beam radius, beam deflection angle. The operation frequency can be adjusted by controlling the state of VO2 at terahertz (THz) region. Simulation results demonstrate that the designed metasurface can generate a non-diffractive OAM beam with tunable topological charge and beam radius, propagating along ±x or ±y directions with the controllable deflection angle between 6.74° and 44.77°, ranging from 0.69 THz to 0.79 THz. |
| Databáze: | OpenAIRE |
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