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Highly efficient octave-spanning long-wavelength infrared generation with a 74% quantum efficiency in a χ(2) waveguide

Author

Listed:
  • Bo Hu

    (Sichuan University)

  • Xuemei Yang

    (Sichuan University)

  • Jiangen Wu

    (Shenzhen Technology University)

  • Siyi Lu

    (Sichuan University)

  • Hang Yang

    (Sichuan University)

  • Zhe Long

    (Sichuan University)

  • Linzhen He

    (Sichuan University)

  • Xing Luo

    (Shenzhen University)

  • Kan Tian

    (Sichuan University)

  • Weizhe Wang

    (Sichuan University)

  • Yang Li

    (Sichuan University)

  • Han Wu

    (Sichuan University)

  • Wenlong Li

    (Chengdu Dien PHOTOELECTRIC Technology Co., Ltd.)

  • Chunyu Guo

    (Shenzhen University)

  • Huan Yang

    (Shenzhen Technology University)

  • Qi Jie Wang

    (Nanyang Technological University)

  • Houkun Liang

    (Sichuan University)

Abstract

The realization of compact and efficient broadband mid-infrared (MIR) lasers has enormous impacts in promoting MIR spectroscopy for various important applications. A number of well-designed waveguide platforms have been demonstrated for MIR supercontinuum and frequency comb generations based on cubic nonlinearities, but unfortunately third-order nonlinear response is inherently weak. Here, we propose and demonstrate for the first time a χ(2) micrometer waveguide platform based on birefringence phase matching for long-wavelength infrared (LWIR) laser generation with a high quantum efficiency. In a ZnGeP2-based waveguide platform, an octave-spanning spectrum covering 5–11 μm is generated through optical parametric generation (OPG). A quantum conversion efficiency of 74% as a new record in LWIR single-pass parametric processes is achieved. The threshold energy is measured as ~616 pJ, reduced by more than 1-order of magnitude as compared to those of MIR OPGs in bulk media. Our prototype micro-waveguide platform could be extended to other χ(2) birefringence crystals and trigger new frontiers of MIR integrated nonlinear photonics.

Suggested Citation

  • Bo Hu & Xuemei Yang & Jiangen Wu & Siyi Lu & Hang Yang & Zhe Long & Linzhen He & Xing Luo & Kan Tian & Weizhe Wang & Yang Li & Han Wu & Wenlong Li & Chunyu Guo & Huan Yang & Qi Jie Wang & Houkun Liang, 2023. "Highly efficient octave-spanning long-wavelength infrared generation with a 74% quantum efficiency in a χ(2) waveguide," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42912-0
    DOI: 10.1038/s41467-023-42912-0
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    References listed on IDEAS

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    1. Kaiheng Zou & Kai Pang & Hao Song & Jintao Fan & Zhe Zhao & Haoqian Song & Runzhou Zhang & Huibin Zhou & Amir Minoofar & Cong Liu & Xinzhou Su & Nanzhe Hu & Andrew McClung & Mahsa Torfeh & Amir Arbabi, 2022. "High-capacity free-space optical communications using wavelength- and mode-division-multiplexing in the mid-infrared region," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
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