Spin-Decoupled Multifunctional Metasurface for Asymmetric Polarization Generation
Type
ArticleAuthors
Xu, YuehongLi, Quan
Zhang, Xueqian

Wei, Minggui
Xu, Quan

Wang, Qiu
Zhang, Huifang
Zhang, Wentao
Hu, Cong
Zhang, Zhenwei
Zhang, Cunlin
Zhang, Xixiang

Han, Jiaguang
Zhang, Weili
KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
KAUST Grant Number
URF-2950-CRG5CRF-2016-2950-RG5
CRF-2017-3427-CRG6
Date
2019-10-28Embargo End Date
2020-10-28Permanent link to this record
http://hdl.handle.net/10754/660066
Metadata
Show full item recordAbstract
Integrating multiple functionalities into a single device is a striking field in metasurfaces. One promising aspect is polarization-dependent meta-devices enabled by simultaneous phase control over orthogonally polarized waves. Among these, Pancharatnam-Berry (PB) metasurfaces have drawn enormous interest owing to their natural and robust phase control ability over different circularly polarized waves. However, the phase responses are locked to be opposite with each other, resulting in interrelated functionalities under the circularly polarized incidence. Here, a generic designing method based on transmission-type dielectric metasurfaces is proposed in the terahertz regime, which breaks this relation by further incorporating dynamic phase with geometric phase, namely, spin-decoupled phase control method. We demonstrate this method by designing and characterizing an efficient multifunctional meta-grating, which splits different circularly polarized waves to asymmetric angles under normal incidences. More importantly, we promote this method by designing several multiplexed meta-gratings for applications of asymmetric polarization generation, which can convert arbitrary linearly polarized wave to two different linearly polarized waves with nearly equal strength and split them to asymmetric angles with a polarization-insensitive efficiency. The designing strategy proposed here shows an impressive robustness and a great flexibility for designing multifunctional metasurface-based devices and opens new avenues toward modulation of polarization states and the application of metasurfaces in beam steering and polarization multiplexing systems.Citation
Xu, Y., Li, Q., Zhang, X., Wei, M., Xu, Q., Wang, Q., … Zhang, W. (2019). Spin-Decoupled Multifunctional Metasurface for Asymmetric Polarization Generation. ACS Photonics. doi:10.1021/acsphotonics.9b01047Sponsors
National Natural Science Foundation of China (Grant Nos. 61605143, 61735012, 61705167, 61875150, and 61420106006); Tianjin Municipal Fund for Distinguished Young Scholars (Grant No. 18JCJQJC45600); Scientific Research Project of Tianjin Education Commission (Grant No. JWK1608); Start-up project of scientific research of Tianjin University of Technology and Education (Grant No. KYQD1718); Guangxi Key Laboratory of Automatic Detecting Technology and Instruments (YQ17203, YQ18205); King Abdullah University of Science and Technology, Office of Sponsored Research (Grand Nos. URF-2950-CRG5, CRF- 2016-2950-RG5, and CRF-2017-3427-CRG6).Publisher
American Chemical Society (ACS)Journal
ACS PhotonicsAdditional Links
https://pubs.acs.org/doi/10.1021/acsphotonics.9b01047ae974a485f413a2113503eed53cd6c53
10.1021/acsphotonics.9b01047
Scopus Count
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