Frequency coding all-dielectric metasurface for flexible control of electromagnetic radiation


In this paper, a frequency coding all-dielectric metasurface is proposed, which are achieved by simultaneously encoding dielectric unit cells with phase and frequency phase sensitivity information. The frequency phase sensitivity refers to the derivative of phase over working frequency band, which can be used to shape the phase distribution varying as desired by changing the frequency. A variety of tunable, high efficiency and versatile electromagnetic (EM) energy radiations can be realized in a dielectric coding metasurface without changing the coding distribution map and introducing any active devices. As proofs of concept, it has been demonstrated theoretically and numerically that the distinct functionalities are accomplished for the normal incidences of plane EM waves, including frequency controls of multibeam generation, anomalous deflection, vortex beam generation, and diffuse scattering. This work may be utilized in many application scenarios, such as 5G wireless communications and high quality of holograms.

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This work is supported by the China Postdoctoral Science Special Foundation (2018T110274), China Postdoctoral Science Foundation (CPSF) (2017M611357), Postdoctoral Science Foundation of Heilongjiang Province of China (LBH-Z17045), Young Creative Talents Training Plan of General Universities of Heilongjiang Province of China (UNPYSCT-2017152), Technology Bureau of Qiqihar City of Heilongjiang Province of China (GYGG-201905, GYGG-201511), Special project of intelligent machine tool research institute of basic scientific research operating expenses of Heilongjiang province universities of China (135409610), National Natural Science Foundation of China (NSFC) (61501275), Science Foundation Project of Heilongjiang Province of China (QC2015073), Higher Education Teaching Reform Project of Heilongjiang Province of China (SJGY20190726), Industry-University Cooperative Education Project of the Ministry of Education (201902076029), and Qiqihar University Degree and Graduate education and Teaching reform research project (JGXM_QUG_2019019).

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Correspondence to Lei Zhu or Chun Hui Zhao.

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Zhu, L., Li, T.C., Huang, J.H. et al. Frequency coding all-dielectric metasurface for flexible control of electromagnetic radiation. Appl. Phys. A 127, 131 (2021).

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  • All-dielectric
  • Frequency coding metasurface
  • High efficiency
  • Tunability
  • Electromagnetic wave control