Strong coupling of collective optical resonances in dielectric metasurfaces

Izzatjon Allayarov; Vittorio Aita; Diane J. Roth; Boaz van Casteren; Anton Yu. Bykov; Andrey B. Evlyukhin; Anatoly V. Zayats; Antonio Calà Lesina

doi:10.1038/s41377-025-02076-6

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Strong coupling of collective optical resonances in dielectric metasurfaces

Original Articles

- Strong coupling of collective optical resonances in dielectric metasurfaces
- Strong coupling of collective optical resonances in dielectric metasurfaces
- Light: Science & Applications 2025年14卷第12期页码：4122-4132
- Affiliations：
  
  1.Hannover Centre for Optical Technologies, Leibniz University Hannover, Hannover, Germany
  2.Institute of Transport and Automation Technology, Leibniz University Hannover, Garbsen, Germany
  3.Cluster of Excellence PhoenixD, Leibniz University Hannover, Hannover, Germany
  4.Department of Physics and London Centre for Nanotechnology, King's College London, London, UK
  5.QinetiQ, Cody Technology Park, Farnborough, UK
  6.NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK
  7.Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Author bio：
  
  Andrey B. Evlyukhin (evlyukhin@iqo.uni-hannover.de)
  Anatoly V. Zayats (anatoly.zayats@kcl.ac.uk)
  Antonio Calà Lesina (antonio.calalesina@hot.uni-hannover.de)
- Funds：
- DOI：10.1038/s41377-025-02076-6
  中图分类号：
- 收稿：2024-12-31，
  
  修回：2025-09-17，
  
  录用：2025-09-28，
  
  网络出版：2025-11-24，
  
  纸质出版：2025-12-31
- Accepted：
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Izzatjon Allayarov, Vittorio Aita, Diane J. Roth, 等. Strong coupling of collective optical resonances in dielectric metasurfaces[J]. Light: Science & Applications, 2025,14(12):4122-4132.

Allayarov, I. et al. Strong coupling of collective optical resonances in dielectric metasurfaces. Light: Science & Applications, 14, 4122-4132 (2025).
Izzatjon Allayarov, Vittorio Aita, Diane J. Roth, 等. Strong coupling of collective optical resonances in dielectric metasurfaces[J]. Light: Science & Applications, 2025,14(12):4122-4132. DOI： 10.1038/s41377-025-02076-6.

Allayarov, I. et al. Strong coupling of collective optical resonances in dielectric metasurfaces. Light: Science & Applications, 14, 4122-4132 (2025). DOI： 10.1038/s41377-025-02076-6.

摘要

Abstract

Dielectric metasurfaces can achieve strong light-matter interaction based on several types of collective (nonlocal) resonances

such as surface lattice resonances (SLRs) and quasi-bound states in the continuum (quasi-BICs). Spectral selectivity

field enhancement

and high and controllable Q-factors make these resonances appealing for technological applications in lasing

sensing

nonlinear optics

and quantum photon sources. An emerging challenge focuses on tailoring light-matter interaction via mode coupling and hybridisation between the fundamental resonances of a metasurface. While strong coupling phenomena have been demonstrated between various resonant modes

the interplay between collective resonances of different natures has not been observed to date. Here

we theoretically

numerically

and experimentally demonstrate the onset of coupling and hybridisation between symmetry-protected quasi-BICs and SLRs in a dielectric metasurface. We show the emergence of anticrossing (or Rabi splitting) in the strong coupling regime with suppression of reflection

observed under TE-polarised excitation

and the manifestation of an accidental BIC under TM-polarised illumination as a result of energy exchange between the participating collective resonances in the weak coupling regime. The first effect is accompanied by hybridised near fields of the modes. The observed coupling mechanisms can be controlled by modifying the angle of incidence

polarisation

and the surrounding environment. This foundational study on the coupling and hybridisation of collective resonances offers insights that can be leveraged for the design of metasurfaces with targeted quasi-aBIC and collective hybridised resonances. It could also open new possibilities to control the near fields associated with such resonances

with promising applications in tunable nanophotonics and light manipulation.

关键词

Keywords

references

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