Nature Communications (Mar 2020)

Ultra-efficient frequency comb generation in AlGaAs-on-insulator microresonators

  • Lin Chang,
  • Weiqiang Xie,
  • Haowen Shu,
  • Qi-Fan Yang,
  • Boqiang Shen,
  • Andreas Boes,
  • Jon D. Peters,
  • Warren Jin,
  • Chao Xiang,
  • Songtao Liu,
  • Gregory Moille,
  • Su-Peng Yu,
  • Xingjun Wang,
  • Kartik Srinivasan,
  • Scott B. Papp,
  • Kerry Vahala,
  • John E. Bowers

DOI
https://doi.org/10.1038/s41467-020-15005-5
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 8

Abstract

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Despite larger nonlinear coefficients, waveguide losses have prevented using semiconductors instead of dielectric materials for on-chip frequency-comb sources. By significantly reducing waveguide loss, ultra-low-threshold Kerr comb generation is demonstrated in a high-Q AlGaAs-on-insulator microresonator system.