• Photonics Research
  • Vol. 10, Issue 7, 1744 (2022)
Jingyu Wang1、†, Weimin Yang1、†, Guoya Sun1、2、*, Yonglin He1, Peiwen Ren1, and Zhilin Yang1、3、*
Author Affiliations
  • 1Department of Physics, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Xiamen University, Xiamen 361005, China
  • 2e-mail: gysun@xmu.edu.cn
  • 3e-mail: zlyang@xmu.edu.cn
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    DOI: 10.1364/PRJ.453099 Cite this Article Set citation alerts
    Jingyu Wang, Weimin Yang, Guoya Sun, Yonglin He, Peiwen Ren, Zhilin Yang. Boosting anapole-exciton strong coupling in all-dielectric heterostructures[J]. Photonics Research, 2022, 10(7): 1744 Copy Citation Text show less

    Abstract

    The light manipulation beyond the diffraction limit plays an invaluable role in modern physics and nanophotonics. In this work, we have demonstrated a strong coupling with a large Rabi splitting of 151 meV between bulk WS2 excitons and anapole modes in the WS2-Si nanodisk heterostructure array with nanoholes as small as 50 nm radius. This result is acquired by introducing anapole modes to suppress radiative losses to confine light into subwavelength volumes and large spatial overlapping between excitons and strong optical fields. Our work shows that anapole modes may serve as a powerful way to enhance the interaction between light and matter at nanoscales, and it should pave an avenue toward high-performance all-dielectric optoelectronic applications.
    εin=εe+f0ωex2ωex2ω2iγexω,

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    P=1iωJ(r)d3r,

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    M=12cr×J(r)d3r,

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    T=110c{[r·J(r)]r2(r·r)J(r)}d3r,

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    IED=2ω43c3|P|2,

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    IMD=2ω43c3|M|2,

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    ITD=2ω63c5|T|2.

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    (EanapoleiΓanapole/2ggEexcitoniΓexciton/2)(αβ)=E(αβ),

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    E±=(Eanapole+Eexciton)/2±g2+14δ2,

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    Jingyu Wang, Weimin Yang, Guoya Sun, Yonglin He, Peiwen Ren, Zhilin Yang. Boosting anapole-exciton strong coupling in all-dielectric heterostructures[J]. Photonics Research, 2022, 10(7): 1744
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