• Photonics Research
  • Vol. 10, Issue 8, 1931 (2022)
Wei Wu1,2, Qibing Sun1,2,*, Yi Wang1,2, Yu Yang3..., Xianshun Ming1, Lei Shi1,2, Keyi Wang3, Wei Zhao1,2 and Leiran Wang1,2,4|Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
  • 4e-mail: lionking@opt.ac.cn
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    DOI: 10.1364/PRJ.459478 Cite this Article Set citation alerts
    Wei Wu, Qibing Sun, Yi Wang, Yu Yang, Xianshun Ming, Lei Shi, Keyi Wang, Wei Zhao, Leiran Wang, "Mid-infrared broadband optical frequency comb generated in MgF2 resonators," Photonics Res. 10, 1931 (2022) Copy Citation Text show less

    Abstract

    Microresonator-based optical frequency combs are broadband light sources consisting of equally spaced and coherent narrow lines, which are extremely promising for applications in molecular spectroscopy and sensing in the mid-infrared (MIR) spectral region. There are still great challenges in exploring how to improve materials for microresonator fabrication, extend spectral bandwidth of parametric combs, and realize fully stabilized soliton MIR frequency combs. Here, we present an effective scheme for broadband MIR optical frequency comb generation in a MgF2 crystalline microresonator pumped by the quantum cascade laser. The spectral evolution dynamics of the MIR Kerr frequency comb is numerically investigated, revealing the formation mechanism of the microresonator soliton comb via scanning the pump-resonance detuning. We also experimentally implement the modulation instability state MIR frequency comb generation in MgF2 resonators covering from 3380 nm to 7760 nm. This work proceeds microresonator-based comb technology toward a miniaturization MIR spectroscopic device that provides potential opportunities in many fields such as fundamental physics and metrology.
    ωμ=ω0+μD1+12μ2D2+16μ3D3+,

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    Ψτ=(1+iζ0)Ψ+i|Ψ|2Ψn=2N(i)n+1βnn!nΨθn+f,

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    Wei Wu, Qibing Sun, Yi Wang, Yu Yang, Xianshun Ming, Lei Shi, Keyi Wang, Wei Zhao, Leiran Wang, "Mid-infrared broadband optical frequency comb generated in MgF2 resonators," Photonics Res. 10, 1931 (2022)
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