1. Dual-Band and Multi-State Polarization Conversion Using aTerahertz Symmetry-Breaking Metadevice.
- Author
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Deng, Yuwang, Zhou, Qingli, Zhang, Xuteng, Zhang, Pujing, Liang, Wanlin, Ning, Tingyin, Shi, Yulei, and Zhang, Cunlin
- Subjects
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SYMMETRY breaking , *FERMI energy , *GRAPHENE , *LINEAR complementarity problem - Abstract
We numerically and experimentally demonstrate a terahertz metadevice consisting of split-ring resonators (SRRs) present within square metallic rings. This device can function as a dual-band polarization converter by breaking the symmetry of SRRs. Under x-polarized incidence, the metastructure is able to convert linearly polarized (LP) light into a left-hand circular-polarized (LCP) wave. Intriguingly, under y-polarized incidence, frequency-dependent conversion from LP to LCP and right-hand circular-polarized (RCP) states can be achieved at different frequencies. Furthermore, reconfigurable LCP-to-LP and RCP-to-LP switching can be simulated by integrating the device with patterned graphene and changing its Fermi energy. This dual-band and multi-state polarization control provides an alternative solution to developing compact and multifunctional components in the terahertz regime. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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