中国物理B ›› 2018, Vol. 27 ›› Issue (5): 54211-054211.doi: 10.1088/1674-1056/27/5/054211

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

High-power ultraviolet 278-nm laser from fourth-harmonic generation of an Nd: YAG amplifier in CsB3O5 crystal

Miao He(何苗), Feng Yang(杨峰), Cheng Dong(董程), Zhi-Chao Wang(王志超), Lei Yuan(袁磊), Yi-Ting Xu(徐一汀), Guo-Chun Zhang(张国春), Zhi-Min Wang(王志敏), Yong Bo(薄勇), Qin-Jun Peng(彭钦军), Da-Fu Cui(崔大复), Yi-Cheng Wu(吴以成), Zu-Yan Xu(许祖彦)   

  1. 1 Key Laboratory of Solidstate Laser, Technical Institute of Physics and Chemistry(TIPC), Chinese Academy of Sciences, Beijing 100190, China;
    2 Key Laboratory of Functional Crystal and Laser Technology, TIPC, Chinese Academy of Sciences, Beijing 100190, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2017-12-17 修回日期:2018-01-05 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: Feng Yang, Yi-Ting Xu E-mail:yang12345yang@163.com;xuyiting1984@sina.com.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation Program of China (Grant Nos.11504389 and 61505226),the National Key Research Development Program of China (Grant Nos.2016YFB040203 and 61535013),and the National Development Project for Major Scientific Research Facility of China (Grant No.ZDYZ2012-2).

High-power ultraviolet 278-nm laser from fourth-harmonic generation of an Nd: YAG amplifier in CsB3O5 crystal

Miao He(何苗)1,2,3, Feng Yang(杨峰)1,2, Cheng Dong(董程)1,2,3, Zhi-Chao Wang(王志超)1,2, Lei Yuan(袁磊)1,2, Yi-Ting Xu(徐一汀)1, Guo-Chun Zhang(张国春)2, Zhi-Min Wang(王志敏)1,2, Yong Bo(薄勇)1,2, Qin-Jun Peng(彭钦军)1,2, Da-Fu Cui(崔大复)1, Yi-Cheng Wu(吴以成)2, Zu-Yan Xu(许祖彦)1,2   

  1. 1 Key Laboratory of Solidstate Laser, Technical Institute of Physics and Chemistry(TIPC), Chinese Academy of Sciences, Beijing 100190, China;
    2 Key Laboratory of Functional Crystal and Laser Technology, TIPC, Chinese Academy of Sciences, Beijing 100190, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-12-17 Revised:2018-01-05 Online:2018-05-05 Published:2018-05-05
  • Contact: Feng Yang, Yi-Ting Xu E-mail:yang12345yang@163.com;xuyiting1984@sina.com.cn
  • Supported by:
    Project supported by the National Natural Science Foundation Program of China (Grant Nos.11504389 and 61505226),the National Key Research Development Program of China (Grant Nos.2016YFB040203 and 61535013),and the National Development Project for Major Scientific Research Facility of China (Grant No.ZDYZ2012-2).

摘要: We report on the experimental investigation and theoretical analysis of a nanosecond pulse high power ultraviolet (UV) 278 nm laser by fourth-harmonic generation (FHG) of a 1112-nm Nd:YAG amplifier in LiB3O5 (LBO) and CsB3O5 (CBO) crystals. The UV laser delivers a maximum average power of 10.3 W at 278 nm with peak power of 36.8 kW under input pump power of 41 W at 556 nm. This is, to the best of our knowledge, the highest output power at the specific UV wavelength of 278 nm. We also performed the theoretical investigation on the FHG with a model in the Gaussian approximation of both spatial and temporal profiles, especially accounting for the two-photon absorption effect in CBO crystal for the first time. The average output power, pulse width, and beam spatial distribution of the UV laser were simulated. The theoretical calculations are in close agreement with the experimental results.

关键词: ultraviolet lasers, frequency doubled, CsB3O5 (CBO) crystal, two-photon absorption

Abstract: We report on the experimental investigation and theoretical analysis of a nanosecond pulse high power ultraviolet (UV) 278 nm laser by fourth-harmonic generation (FHG) of a 1112-nm Nd:YAG amplifier in LiB3O5 (LBO) and CsB3O5 (CBO) crystals. The UV laser delivers a maximum average power of 10.3 W at 278 nm with peak power of 36.8 kW under input pump power of 41 W at 556 nm. This is, to the best of our knowledge, the highest output power at the specific UV wavelength of 278 nm. We also performed the theoretical investigation on the FHG with a model in the Gaussian approximation of both spatial and temporal profiles, especially accounting for the two-photon absorption effect in CBO crystal for the first time. The average output power, pulse width, and beam spatial distribution of the UV laser were simulated. The theoretical calculations are in close agreement with the experimental results.

Key words: ultraviolet lasers, frequency doubled, CsB3O5 (CBO) crystal, two-photon absorption

中图分类号:  (Diode-pumped lasers)

  • 42.55.Xi
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.72.Bj (Visible and ultraviolet sources)