中国物理B ›› 2022, Vol. 31 ›› Issue (12): 124203-124203.doi: 10.1088/1674-1056/ac8346

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Watt-level, green-pumped optical parametric oscillator based on periodically poled potassium titanyl phosphate with high extraction efficiency

Hang-Hang Yu(俞航航), Zhi-Tao Zhang(张志韬), and Hong-Wen Xuan(玄洪文)†   

  1. GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510700, China
  • 收稿日期:2022-07-03 修回日期:2022-07-21 接受日期:2022-07-22 出版日期:2022-11-11 发布日期:2022-11-11
  • 通讯作者: Hong-Wen Xuan E-mail:xuanhw@aircas.ac.cn
  • 基金资助:
    The work was supported by the Chinese Academy of Sciences Pioneer Hundred Talents Program (Grant No. E1Z1D101) and the Research Project of Aerospace Information Research Institute, Chinese Academy of Sciences (Grant No. E2Z2D101).

Watt-level, green-pumped optical parametric oscillator based on periodically poled potassium titanyl phosphate with high extraction efficiency

Hang-Hang Yu(俞航航), Zhi-Tao Zhang(张志韬), and Hong-Wen Xuan(玄洪文)†   

  1. GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510700, China
  • Received:2022-07-03 Revised:2022-07-21 Accepted:2022-07-22 Online:2022-11-11 Published:2022-11-11
  • Contact: Hong-Wen Xuan E-mail:xuanhw@aircas.ac.cn
  • Supported by:
    The work was supported by the Chinese Academy of Sciences Pioneer Hundred Talents Program (Grant No. E1Z1D101) and the Research Project of Aerospace Information Research Institute, Chinese Academy of Sciences (Grant No. E2Z2D101).

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摘要： We report a compact, efficient optical parametric oscillator (OPO) based on a periodically poled potassium titanyl phosphate (PPKTP) crystal pumped by a 532 nm laser, which generated 1.51 W of average power at the signal wavelength of 709 nm with the pulse duration of ～ 1.0 ns. The extraction efficiency was up to 59%. To the best of our knowledge, this is the first report on Watt-level green-pumped PPKTP-based singly resonant oscillator OPO (SRO-OPO). The precise build-up time of OPO was determined to be 1.6 ns benefitting from the characteristic of twin-peak pulse profile of pump beam. The spectrum width of the idler was also measured to be 4.2 nm with the central wavelength of 2134 nm at 0.2 nm spectral resolution of optical spectrum analyzer. In addition, the beam quality of M2 < 1.9 of generated signal exhibits a good consistency with M2 < 1.5 for the pump source.

关键词: SRO-OPO, PPKTP, build-up time

Abstract: We report a compact, efficient optical parametric oscillator (OPO) based on a periodically poled potassium titanyl phosphate (PPKTP) crystal pumped by a 532 nm laser, which generated 1.51 W of average power at the signal wavelength of 709 nm with the pulse duration of ～ 1.0 ns. The extraction efficiency was up to 59%. To the best of our knowledge, this is the first report on Watt-level green-pumped PPKTP-based singly resonant oscillator OPO (SRO-OPO). The precise build-up time of OPO was determined to be 1.6 ns benefitting from the characteristic of twin-peak pulse profile of pump beam. The spectrum width of the idler was also measured to be 4.2 nm with the central wavelength of 2134 nm at 0.2 nm spectral resolution of optical spectrum analyzer. In addition, the beam quality of M2 < 1.9 of generated signal exhibits a good consistency with M2 < 1.5 for the pump source.

Key words: SRO-OPO, PPKTP, build-up time

中图分类号:  (Lasers)

  • 42.55.-f
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.65.-k (Nonlinear optics)