中国物理B ›› 2017, Vol. 26 ›› Issue (1): 14206-014206.doi: 10.1088/1674-1056/26/1/014206

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

Kerr-lens mode-locked polycrystalline Cr: ZnS femtosecond laser pumped by a monolithic Er: YAG laser

Chengfeng Hu(胡呈峰), Jiangfeng Zhu(朱江峰), Zhaohua Wang(王兆华), Xintong Sun(孙芯彤), Long Wei(魏龙), Weijun Ling(令维军), Zhong Dong(董忠), Qing Wang(王庆), Chunqing Gao(高春清), Zhiyi Wei(魏志义)   

  1. 1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3. Department of Physics, Tianshui Normal University, Tianshui 741000, China;
    4. Department of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2016-09-19 修回日期:2016-10-13 出版日期:2017-01-05 发布日期:2017-01-05
  • 通讯作者: Jiangfeng Zhu, Zhiyi Wei E-mail:jfzhu@xidian.edu.cn;zywei@iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61205130, 61465012, and 61564008).

Kerr-lens mode-locked polycrystalline Cr: ZnS femtosecond laser pumped by a monolithic Er: YAG laser

Chengfeng Hu(胡呈峰)1, Jiangfeng Zhu(朱江峰)1, Zhaohua Wang(王兆华)2, Xintong Sun(孙芯彤)1, Long Wei(魏龙)1, Weijun Ling(令维军)3, Zhong Dong(董忠)3, Qing Wang(王庆)4, Chunqing Gao(高春清)4, Zhiyi Wei(魏志义)1,2   

  1. 1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3. Department of Physics, Tianshui Normal University, Tianshui 741000, China;
    4. Department of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2016-09-19 Revised:2016-10-13 Online:2017-01-05 Published:2017-01-05
  • Contact: Jiangfeng Zhu, Zhiyi Wei E-mail:jfzhu@xidian.edu.cn;zywei@iphy.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61205130, 61465012, and 61564008).

摘要:

We demonstrated a Kerr-lens mode-locked polycrystalline Cr:ZnS laser pumped by a narrow-linewidth linear-polarised monolithic Er:YAG nonplanar ring oscillator operated at 1645 nm. With a 5-mm-thick sapphire plate for intracavity dispersion compensation, a compact and stable Kerr-lens mode-locking operation was realised. The oscillator delivered 125-fs pulses at 2347 nm with an average power of 80 mW. Owing to the special polycrystalline structure of the Cr:ZnS crystal, the second to fourth harmonic generation was observed by random quasi-phase-matching.

关键词: middle-infrared laser, mode-locked laser, polycrystalline Cr:ZnS

Abstract:

We demonstrated a Kerr-lens mode-locked polycrystalline Cr:ZnS laser pumped by a narrow-linewidth linear-polarised monolithic Er:YAG nonplanar ring oscillator operated at 1645 nm. With a 5-mm-thick sapphire plate for intracavity dispersion compensation, a compact and stable Kerr-lens mode-locking operation was realised. The oscillator delivered 125-fs pulses at 2347 nm with an average power of 80 mW. Owing to the special polycrystalline structure of the Cr:ZnS crystal, the second to fourth harmonic generation was observed by random quasi-phase-matching.

Key words: middle-infrared laser, mode-locked laser, polycrystalline Cr:ZnS

中图分类号:  (Ultrafast processes; optical pulse generation and pulse compression)

  • 42.65.Re
42.55.Rz (Doped-insulator lasers and other solid state lasers) 42.60.Fc (Modulation, tuning, and mode locking)