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Ultralow-threshold laser using super-bound states in the continuum

Author

Listed:
  • Min-Soo Hwang

    (Korea University)

  • Hoo-Cheol Lee

    (Korea University)

  • Kyoung-Ho Kim

    (Chungbuk National University)

  • Kwang-Yong Jeong

    (Korea University)

  • Soon-Hong Kwon

    (Chung-Ang University)

  • Kirill Koshelev

    (Australian National University
    ITMO University)

  • Yuri Kivshar

    (Australian National University)

  • Hong-Gyu Park

    (Korea University
    Korea University)

Abstract

Wavelength-scale lasers provide promising applications through low power consumption requiring for optical cavities with increased quality factors. Cavity radiative losses can be suppressed strongly in the regime of optical bound states in the continuum; however, a finite size of the resonator limits the performance of bound states in the continuum as cavity modes for active nanophotonic devices. Here, we employ the concept of a supercavity mode created by merging symmetry-protected and accidental bound states in the continuum in the momentum space, and realize an efficient laser based on a finite-size cavity with a small footprint. We trace the evolution of lasing properties before and after the merging point by varying the lattice spacing, and we reveal this laser demonstrates the significantly reduced threshold, substantially increased quality factor, and shrunken far-field images. Our results provide a route for nanolasers with reduced out-of-plane losses in finite-size active nanodevices and improved lasing characteristics.

Suggested Citation

  • Min-Soo Hwang & Hoo-Cheol Lee & Kyoung-Ho Kim & Kwang-Yong Jeong & Soon-Hong Kwon & Kirill Koshelev & Yuri Kivshar & Hong-Gyu Park, 2021. "Ultralow-threshold laser using super-bound states in the continuum," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24502-0
    DOI: 10.1038/s41467-021-24502-0
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    Cited by:

    1. 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.
    2. 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.
    3. Lucca Kühner & Luca Sortino & Rodrigo Berté & Juan Wang & Haoran Ren & Stefan A. Maier & Yuri Kivshar & Andreas Tittl, 2022. "Radial bound states in the continuum for polarization-invariant nanophotonics," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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