• Chinese Optics Letters
  • Vol. 16, Issue 5, 050003 (2018)
Jing Yan1、2, Yinghui Guo1、2, Mingbo Pu1、2, Xiong Li1、2, Xiaoliang Ma1、2, and Xiangang Luo1、2、*
Author Affiliations
  • 1State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.3788/COL201816.050003 Cite this Article Set citation alerts
    Jing Yan, Yinghui Guo, Mingbo Pu, Xiong Li, Xiaoliang Ma, Xiangang Luo. High-efficiency multi-wavelength metasurface with complete independent phase control[J]. Chinese Optics Letters, 2018, 16(5): 050003 Copy Citation Text show less

    Abstract

    As a consequence of Kramers–Kronig relations, the wavelength-dependent behavior of the metasurface is one of the critical limitations in existing metasurface structures, which reduces the design freedom among different wavelengths. Here, we present an approach to construct a high-efficiency multi-wavelength metasurface with independent phase control by coding different wavelengths into orthogonal polarizations. As proof of the concept, two dual-band metasurfaces have been proposed and numerically demonstrated by multiple vortex beam generation in near-field and polarization multiplexing achromatic beam deflection. Furthermore, simulated results show that the proposed metasurface exhibits high transmission efficiency at both wavelengths, which may find widespread applications in subwavelength electromagnetics.
    T(x,y)=(txxtxytyytyx)I(x,y),(1)

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    Φ1i(x,y)=liφi=liarctan(x/y),i=1,2,(2)

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    Φ2i=2πλi(x2+y2+f2f),(3)

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    Jing Yan, Yinghui Guo, Mingbo Pu, Xiong Li, Xiaoliang Ma, Xiangang Luo. High-efficiency multi-wavelength metasurface with complete independent phase control[J]. Chinese Optics Letters, 2018, 16(5): 050003
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