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Near-visible integrated soliton microcombs with detectable repetition rates

Author

Listed:
  • Peng Liu

    (California Institute of Technology)

  • Qing-Xin Ji

    (California Institute of Technology)

  • Jin-Yu Liu

    (California Institute of Technology)

  • Jinhao Ge

    (California Institute of Technology)

  • Mingxiao Li

    (University of California Santa Barbara)

  • Joel Guo

    (University of California Santa Barbara)

  • Warren Jin

    (University of California Santa Barbara
    Anello Photonics)

  • Maodong Gao

    (California Institute of Technology)

  • Yan Yu

    (California Institute of Technology)

  • Avi Feshali

    (Anello Photonics)

  • Mario Paniccia

    (Anello Photonics)

  • John E. Bowers

    (University of California Santa Barbara)

  • Kerry J. Vahala

    (California Institute of Technology)

Abstract

Integrated soliton microcombs benefit a wide range of conventional comb applications through their compactness and scalability. And applications such as optical clocks and biosensing have driven interest in their operation at wavelengths approaching the visible band. However, increasing normal dispersion and optical loss at shorter wavelengths make short pulse operation at low pumping power challenging, especially for detectable-rate microcombs. Here, low-pump-power, detectable-rate soliton microcombs are demonstrated from telecom to visible bands using ultra-low-loss silicon nitride waveguides. Wavelength-multiplexed operation spanning 2/3 octave is also demonstrated in a single device. The results fill a gap needed for realization of integrated self-referenced visible microcombs.

Suggested Citation

  • Peng Liu & Qing-Xin Ji & Jin-Yu Liu & Jinhao Ge & Mingxiao Li & Joel Guo & Warren Jin & Maodong Gao & Yan Yu & Avi Feshali & Mario Paniccia & John E. Bowers & Kerry J. Vahala, 2025. "Near-visible integrated soliton microcombs with detectable repetition rates," Nature Communications, Nature, vol. 16(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60157-x
    DOI: 10.1038/s41467-025-60157-x
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