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Topologically enabled ultrahigh-Q guided resonances robust to out-of-plane scattering

Author

Listed:
  • Jicheng Jin

    (Peking University)

  • Xuefan Yin

    (Peking University)

  • Liangfu Ni

    (Peking University)

  • Marin Soljačić

    (Massachusetts Institute of Technology)

  • Bo Zhen

    (University of Pennsylvania)

  • Chao Peng

    (Peking University
    Nano-optoelectronics Frontier Center of the Ministry of Education)

Abstract

Because of their ability to confine light, optical resonators1–3 are of great importance to science and technology, but their performance is often limited by out-of-plane-scattering losses caused by inevitable fabrication imperfections4,5. Here we theoretically propose and experimentally demonstrate a class of guided resonances in photonic crystal slabs, in which out-of-plane-scattering losses are strongly suppressed by their topological nature. These resonances arise when multiple bound states in the continuum—each carrying a topological charge6—merge in momentum space and enhance the quality factors Q of all nearby resonances in the same band. Using such resonances in the telecommunication regime, we experimentally achieve quality factors as high as 4.9 × 105—12 times higher than those obtained with standard designs—and this enhancement remains robust for all of our samples. Our work paves the way for future explorations of topological photonics in systems with open boundary conditions and for their application to the improvement of optoelectronic devices in photonic integrated circuits.

Suggested Citation

  • Jicheng Jin & Xuefan Yin & Liangfu Ni & Marin Soljačić & Bo Zhen & Chao Peng, 2019. "Topologically enabled ultrahigh-Q guided resonances robust to out-of-plane scattering," Nature, Nature, vol. 574(7779), pages 501-504, October.
  • Handle: RePEc:nat:nature:v:574:y:2019:i:7779:d:10.1038_s41586-019-1664-7
    DOI: 10.1038/s41586-019-1664-7
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    Cited by:

    1. Wenhao Wang & Yogesh Kumar Srivastava & Thomas CaiWei Tan & Zhiming Wang & Ranjan Singh, 2023. "Brillouin zone folding driven bound states in the continuum," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Shengyan Liu & Hao Tong & Kejie Fang, 2022. "Optomechanical crystal with bound states in the continuum," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    3. Lujun Huang & Rong Jin & Chaobiao Zhou & Guanhai Li & Lei Xu & Adam Overvig & Fu Deng & Xiaoshuang Chen & Wei Lu & Andrea Alù & Andrey E. Miroshnichenko, 2023. "Ultrahigh-Q guided mode resonances in an All-dielectric metasurface," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    4. Ming Kang & Ziying Zhang & Tong Wu & Xueqian Zhang & Quan Xu & Alex Krasnok & Jiaguang Han & Andrea Alù, 2022. "Coherent full polarization control based on bound states in the continuum," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    5. Chloe F. Doiron & Igal Brener & Alexander Cerjan, 2022. "Realizing symmetry-guaranteed pairs of bound states in the continuum in metasurfaces," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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