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Topological polarization singular lasing with highly efficient radiation channel

Author

Listed:
  • Yun-Gang Sang

    (Peking University
    Peking University)

  • Jing-Yu Lu

    (Peking University
    Peking University)

  • Yun-Hao Ouyang

    (Peking University
    Peking University)

  • Hong-Yi Luan

    (Peking University
    Peking University)

  • Jia-Hao Wu

    (Peking University
    Peking University)

  • Jia-Yong Li

    (Peking University
    Peking University)

  • Ren-Min Ma

    (Peking University
    Peking University
    Peking University Yangtze Delta Institute of Optoelectronics
    Peking University)

Abstract

Bound states in the continuum (BICs) in photonic crystals describe the originally leaky Bloch modes that can become bounded when their radiation fields carry topological polarization singularities. However, topological polarization singularities do not carry energy to far field, which limits radiation efficiencies of BICs for light emitting applications. Here, we demonstrate a topological polarization singular laser which has a topological polarization singular channel in the second Brillouin zone and a paired linearly polarized radiation channel in the first Brillouin zone. The presence of the singular channel enables the lasing mode with a higher quality factor than other modes for single mode lasing. In the meanwhile, the presence of the radiation channel secures the lasing mode with high radiation efficiency. The demonstrated topological polarization singular laser operates at room temperature with an external quantum efficiency exceeding 24%. Our work presents a new paradigm in eigenmode engineering for mode selection, exotic field manipulation and lasing.

Suggested Citation

  • Yun-Gang Sang & Jing-Yu Lu & Yun-Hao Ouyang & Hong-Yi Luan & Jia-Hao Wu & Jia-Yong Li & Ren-Min Ma, 2022. "Topological polarization singular lasing with highly efficient radiation channel," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34307-4
    DOI: 10.1038/s41467-022-34307-4
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    Cited by:

    1. Kristian Arjas & Jani Matti Taskinen & Rebecca Heilmann & Grazia Salerno & Päivi Törmä, 2024. "High topological charge lasing in quasicrystals," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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