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200 Hz高重复频率SBS脉宽压缩实验研究

康治军 张鸿博 闫晓超 郎野 白振岙 樊仲维

康治军, 张鸿博, 闫晓超, 郎野, 白振岙, 樊仲维. 200 Hz高重复频率SBS脉宽压缩实验研究[J]. 中国光学(中英文), 2018, 11(5): 736-744. doi: 10.3788/CO.20181105.0736
引用本文: 康治军, 张鸿博, 闫晓超, 郎野, 白振岙, 樊仲维. 200 Hz高重复频率SBS脉宽压缩实验研究[J]. 中国光学(中英文), 2018, 11(5): 736-744. doi: 10.3788/CO.20181105.0736
KANG Zhi-jun, ZHANG Hong-bo, YAN Xiao-chao, LANG Ye, BAI Zhen-ao, FAN Zhong-wei. 200 Hz high repetition frequency SBS pulse width compression experiment[J]. Chinese Optics, 2018, 11(5): 736-744. doi: 10.3788/CO.20181105.0736
Citation: KANG Zhi-jun, ZHANG Hong-bo, YAN Xiao-chao, LANG Ye, BAI Zhen-ao, FAN Zhong-wei. 200 Hz high repetition frequency SBS pulse width compression experiment[J]. Chinese Optics, 2018, 11(5): 736-744. doi: 10.3788/CO.20181105.0736

200 Hz高重复频率SBS脉宽压缩实验研究

doi: 10.3788/CO.20181105.0736
基金项目: 

国家重大科研装备研制项目 ZDYZ2013-2

详细信息
    作者简介:

    康治军(1980-)男, 福建南平人, 硕士, 高级工程师, 主要从事高功率SBS相位共轭激光器及其应用方面的研究。E-mail:kzjun1221@126.com

    樊仲维(1965—),男,吉林桦甸人,博士,研究员,博士生导师,主要从事高功率超短脉冲激光及非线性光学方面的研究。E-mail:fangzhongwei@aoe.ac.cn

  • 中图分类号: TP394.1;TH691.9

200 Hz high repetition frequency SBS pulse width compression experiment

Funds: 

the National Research and Development Projects for Key Scientific Instruments ZDYZ2013-2

More Information
  • 摘要: 受激布里渊散射(SBS)脉宽压缩是实现高峰值功率、短脉冲激光输出的重要途径之一,然而,目前SBS脉宽压缩仅限于1~10 Hz低重复频率激光器,限制了高重频短脉冲激光器在激光雷达、空间碎片探测以及目标成像等领域的应用。基于此,开展了高重复频率下的SBS脉宽压缩实验研究。设计搭建了高重复频率的主振荡放大激光器,开展了SBS二次级联脉宽压缩和SBS振荡放大双池脉宽压缩实验。通过SBS二次级联压缩实现了脉冲宽度从~32 ns压缩到~1.9 ns,脉宽压缩比达16倍;而通过SBS振荡放大双池结构实现了脉冲宽度从~4 ns压缩到376 ps,脉宽压缩比达10倍。实验结果表明,采用该超净封闭型SBS相位共轭镜,在Stokes光输出能量达50 mJ时,无光学击穿现象,实现了在200 Hz高重复频率下的SBS脉宽压缩。

     

  • 图 1  SBS二次级联压缩激光器装置

    Figure 1.  Laser device of two cascade SBS pulse width compression

    图 2  SBS振荡放大双池脉宽压缩激光器装置

    Figure 2.  Laser device of SBS oscillation amplification double cell structure

    图 3  SBS二次级联脉宽压缩光路图

    Figure 3.  Schematic diagram of two cascade SBS pulse width compression

    图 4  第一级SBS脉宽压缩(左)和第二级SBS脉宽压缩(右)波形图

    Figure 4.  Pulse waveform diagram of first stage SBS pulse width compression (left) and second stage SBS pulse width compression (right)

    图 5  SBS振荡放大双池结构光路示意图

    Figure 5.  Schematic diagram of SBS oscillation amplification double cell structure

    图 6  SBS振荡放大双池脉宽压缩波形图

    Figure 6.  Pulse waveform diagram of SBS oscillation amplification double cell pulse width compression

    图 7  不同泵浦能量下SBS脉宽压缩的Stokes光波形图

    Figure 7.  Stokes light waveforms of SBS pulse width compression under different pumping energy

    图 8  SBS相位共轭光束畸变补偿前后光斑图

    Figure 8.  Intensity profiles of distortion compensation of SBS phase conjugate

    表  1  SBS介质物理化学特性

    Table  1.   Physical and chemical properties of SBS medium

    液体 运动粘度/
    CSt
    声子寿命/
    ns
    增益系数/
    (cm·GW-1)
    SBS频移/
    MHz
    吸收系数/
    cm
    OBT/
    (GW·cm-2)
    FC-770 0.793 0.57 3.5 1 081 0.001 1 198
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出版历程
  • 收稿日期:  2018-02-09
  • 修回日期:  2018-03-06
  • 刊出日期:  2018-10-01

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