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    High-Efficiency Dielectric Metasurfaces for Polarization-Dependent Terahertz Wavefront Manipulation

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    Type
    Article
    Authors
    Zhang, Huifang
    Zhang, Xueqian
    Xu, Quan
    Tian, Chunxiu
    Wang, Qiu
    Xu, Yuehong
    Li, Yanfeng cc
    Gu, Jianqiang cc
    Tian, Zhen
    Ouyang, Chunmei
    Zhang, Xixiang cc
    Hu, Cong
    Han, Jiaguang cc
    Zhang, Weili
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2017-11-30
    Online Publication Date
    2017-11-30
    Print Publication Date
    2018-01
    Permanent link to this record
    http://hdl.handle.net/10754/626644
    
    Metadata
    Show full item record
    Abstract
    Recently, metasurfaces made up of dielectric structures have drawn enormous attentions in the optical and infrared regimes due to their high efficiency and designing freedom in manipulating light propagation. Such advantages can also be introduced to terahertz frequencies where efficient functional devices are still lacking. Here, polarization-dependent all-silicon terahertz dielectric metasurfaces are proposed and experimentally demonstrated. The metasurfaces are composed of anisotropic rectangular-shaped silicon pillars on silicon substrate. Each metasurface holds dual different functions depending on the incident polarizations. Furthermore, to suppress the reflection loss and multireflection effect in practical applications, a high-performance polarization-independent antireflection silicon pillar array is also proposed, which can be patterned at the other side of the silicon substrate. Such all-silicon dielectric metasurfaces are easy to fabricate and can be very promising in developing next-generation efficient, compact, and low-cost terahertz functional devices.
    Citation
    Zhang H, Zhang X, Xu Q, Tian C, Wang Q, et al. (2017) High-Efficiency Dielectric Metasurfaces for Polarization-Dependent Terahertz Wavefront Manipulation. Advanced Optical Materials: 1700773. Available: http://dx.doi.org/10.1002/adom.201700773.
    Sponsors
    This work was supported by the National Basic Research Program of China (Grant No. 2014CB339800), the National Science Foundation of China (Grant Nos. 61605143, 61422509, 61622505, 61675145, and 61420106006), the Program for Changjiang Scholars and Innovative Research Team in University (Grant No. IRT13033), the Major National Development Project of Scientific Instruments and Equipment (Grant No. 2011YQ150021), and the Guangxi Key Laboratory of Automatic Detecting Technology and Instruments (YQ17203).
    Publisher
    Wiley
    Journal
    Advanced Optical Materials
    DOI
    10.1002/adom.201700773
    Additional Links
    http://onlinelibrary.wiley.com/doi/10.1002/adom.201700773/full
    ae974a485f413a2113503eed53cd6c53
    10.1002/adom.201700773
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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