• Chinese Optics Letters
  • Vol. 19, Issue 12, 123601 (2021)
Yao Qin1, Jinying Xu2, Yineng Liu1、*, and Huanyang Chen1
Author Affiliations
  • 1Institute of Electromagnetics and Acoustics and School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, China
  • 2Department of Physics, Fuzhou University, Fuzhou 350108, China
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    Abstract

    Multifrequency superscattering is a phenomenon in which the scattering cross section from a subwavelength object simultaneously exceeds the single-channel limit at multiple frequency regimes. Here, we achieve simultaneously, within a graphene-coated subwavelength structure, multifrequency superscattering and superscattering shaping with different engineered scattering patterns. It is shown that multimode degenerate resonances at multiple frequency regimes appearing in a graphene composite structure due to the peculiar dispersion can be employed to resonantly overlap electric and magnetic multipoles of various orders, and, as a result, effective multifrequency superscattering with different engineered angular patterns can be obtained. Moreover, the phenomena of multifrequency superscattering have a high tolerance to material losses and some structural variations. Our work should anticipate extensive applications ranging from emission enhancing, energy harvesting, and antenna design with improved sensitivity and accuracy due to multifrequency operation.
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    Yao Qin, Jinying Xu, Yineng Liu, Huanyang Chen. Multifrequency superscattering pattern shaping[J]. Chinese Optics Letters, 2021, 19(12): 123601
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    Category: Nanophotonics, Metamaterials, and Plasmonics
    Received: Mar. 17, 2021
    Accepted: May. 14, 2021
    Posted: May. 14, 2021
    Published Online: Sep. 2, 2021
    The Author Email: Yineng Liu (lyn610@xmu.edu.cn)