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紧凑型波长自动调谐脉冲CO2激光器

潘其坤 苗昉晨 司红利 沈辉 高飞 于德洋 张阔 张冉冉 赵崇霄 陈飞 郭劲

潘其坤, 苗昉晨, 司红利, 沈辉, 高飞, 于德洋, 张阔, 张冉冉, 赵崇霄, 陈飞, 郭劲. 紧凑型波长自动调谐脉冲CO2激光器[J]. 中国光学(中英文), 2022, 15(5): 1007-1012. doi: 10.37188/CO.2022-0107
引用本文: 潘其坤, 苗昉晨, 司红利, 沈辉, 高飞, 于德洋, 张阔, 张冉冉, 赵崇霄, 陈飞, 郭劲. 紧凑型波长自动调谐脉冲CO2激光器[J]. 中国光学(中英文), 2022, 15(5): 1007-1012. doi: 10.37188/CO.2022-0107
PAN Qi-kun, MIAO Fang-chen, SI Hong-Li, SHEN Hui, GAO Fei, YU De-Yang, ZHANG Kuo, ZHANG Ran-ran, ZHAO Chong-Xiao, CHEN Fei, GUO Jin. Compact pulsed CO2 laser with wavelength automatic tuning[J]. Chinese Optics, 2022, 15(5): 1007-1012. doi: 10.37188/CO.2022-0107
Citation: PAN Qi-kun, MIAO Fang-chen, SI Hong-Li, SHEN Hui, GAO Fei, YU De-Yang, ZHANG Kuo, ZHANG Ran-ran, ZHAO Chong-Xiao, CHEN Fei, GUO Jin. Compact pulsed CO2 laser with wavelength automatic tuning[J]. Chinese Optics, 2022, 15(5): 1007-1012. doi: 10.37188/CO.2022-0107

紧凑型波长自动调谐脉冲CO2激光器

doi: 10.37188/CO.2022-0107
基金项目: 国家重点研发计划(No. 2018YFE0203200);吉林省与中科院科技合作项目(No. 2021SYHZ0028);激光与物质相互作用国家重点实验室基金项目(No. SKLLIM1914, SKLLIM2114);中国科学院青年创新促进会(No. 2021216)
详细信息
    作者简介:

    潘其坤(1985—),男,河南开封人,博士,副研究员,中国科学院青年创新促进会会员,2014 年于中国科学院大学获得博士学位,主要从事中长波激光器及激光等离子体极紫外光源方面的研究。E-mail:panqikun2005@163.com

  • 中图分类号: TN248.5

Compact pulsed CO2 laser with wavelength automatic tuning

Funds: Supported by National Key R&D Program of China (No. 2018YFE0203200); Science and Technology Cooperation Project between Jilin Province and Chinese Academy of Sciences (No. 2021SYHZ0028); State Key Laboratory of Laser Interaction with Matter Project (No. SKLLIM1914, SKLLIM2114); Youth Innovation Promotion Association, CAS (No. 2021216)
More Information
  • 摘要:

    面向机载激光差分吸收雷达对小型轻量化激光光源的应用需求,研制了紧凑型自动调谐脉冲CO2激光器。首先,研究了射频波导腔内光束和自由空间光学斩波光束孔径匹配关系,设计了具有实焦点的腔内光束变换系统,实验验证了斩波器通光孔径对激光脉冲波形的影响。其次,研究了CO2激光器的波长调谐特性,分析了相邻激光谱线光栅衍射角度差,并基于高精度电动转台和金属闪耀光栅,实现了CO2激光器波长自动调谐输出。最后,基于小型轻量化模块设计,完成了紧凑型自动调谐脉冲CO2激光器集成。实验结果表明,该激光器在1 kHz条件下运转稳定,脉冲宽度为350 ns,峰值功率为3.7 kW,在9.2~10.7 μm范围内测试到30条激光谱线,重量为18 kg,本文研究为机载激光差分吸收雷达提供了一种小型化探测光源。

     

  • 图 1  可调谐脉冲CO2激光器原理示意图

    Figure 1.  Schematic diagram of a tunable pulsed CO2 laser

    图 2  脉冲CO2激光平均功率随射频激励占空比变化关系

    Figure 2.  Relationship between the average power of a pulsed CO2 laser and the RF excitation duty cycle

    图 3  采用不同通光孔径斩波扇机械调Q获得的CO2激光脉冲波形:(a)0.4 mm,(b)0.8 mm,(c) 1.2 mm。(d)0.8 mm孔径1 kHz脉冲串波形

    Figure 3.  CO2 pulse waveforms obtained by mechanical Q-switching of chopper fans with different optical apertures. (a) 0.4 mm, (b) 0.8 mm, (c) 1.2 mm. (d) Pulse train at 1 kHz with slits width of 0.8 mm

    图 4  小型、轻量化高精度电动转台

    Figure 4.  Small lightweight high precision electric turntable

    图 5  机械调Q脉冲CO2激光器输出谱线

    Figure 5.  Output spectrum of mechanical Q-switched pulsed CO2 lasers

    图 6  紧凑型波长自动调谐脉冲CO2激光器实物图

    Figure 6.  Photo of compact pulsed CO2 laser with wavelength automatic tuning

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出版历程
  • 收稿日期:  2022-05-28
  • 修回日期:  2022-06-27
  • 网络出版日期:  2022-07-12

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