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图像处理在双波长激光诱导熔石英损伤增长中的应用

李翠 史晋芳 邱荣 叶成 郭德成 蒋勇

李翠, 史晋芳, 邱荣, 等. 图像处理在双波长激光诱导熔石英损伤增长中的应用[J]. 强激光与粒子束, 2020, 32: 081004. doi: 10.11884/HPLPB202032.200076
引用本文: 李翠, 史晋芳, 邱荣, 等. 图像处理在双波长激光诱导熔石英损伤增长中的应用[J]. 强激光与粒子束, 2020, 32: 081004. doi: 10.11884/HPLPB202032.200076
Li Cui, Shi Jinfang, Qiu Rong, et al. Application of image processing in dual-wavelength laser-induced damage growth of fused silica[J]. High Power Laser and Particle Beams, 2020, 32: 081004. doi: 10.11884/HPLPB202032.200076
Citation: Li Cui, Shi Jinfang, Qiu Rong, et al. Application of image processing in dual-wavelength laser-induced damage growth of fused silica[J]. High Power Laser and Particle Beams, 2020, 32: 081004. doi: 10.11884/HPLPB202032.200076

图像处理在双波长激光诱导熔石英损伤增长中的应用

doi: 10.11884/HPLPB202032.200076
基金项目: 国家自然科学基金委员会与中国工程物理研究院联合基金项目(U1530109);国家自然科学基金项目(11972313)
详细信息
    作者简介:

    李 翠(1996—),女,硕士研究生,从事激光损伤阈值测量方面的研究;952187791@qq.com

    通讯作者:

    史晋芳(1977—),女,副教授,硕士生导师,主要从事智能化测控与图像处理技术的研究;603071939@qq.com

  • 中图分类号: TN244;O436

Application of image processing in dual-wavelength laser-induced damage growth of fused silica

  • 摘要: 利用图像处理方法对比研究了单波长辐照和双波长激光同时辐照下熔石英光学元件的损伤增长阈值。通过实时采集损伤图像和靶面光斑能量空间分布,获取损伤增长发生位置对应的能量密度。针对$3\omega $单独辐照、$3\omega $$1\omega $同时辐照下熔石英元件损伤增长的实验数据,比较分析了基于图像处理方法和传统损伤增长阈值R-on-1测量方法(国标)所得结果的差异。结果表明:本文采用的图像处理方法在研究小口径非均匀光斑辐照下的熔石英光学元件损伤增长阈值时,能解决传统损伤阈值测试中将能量密度分布非均匀光斑等效为均匀分布的平顶光斑带来的计算误差问题,有助于降低损伤(增长)阈值测量中的光斑口径效应。
  • 图  1  双波长辐照光学元件损伤(增长)测试实验装置

    Figure  1.  Experimental device for damage (growth) testing of dual-wavelength irradiated optical elements

    图  2  获取靶面辐照区能量密度分布的流程

    Figure  2.  Process of obtaining the energy density distribution in the irradiation area of the target surface

    图  3  $3\omega $单独辐照下熔石英后表面损伤增长的典型结果

    Figure  3.  Typical results of surface damage growth of fused silica irradiated by $3\omega $ lasers

    图  4  $3\omega $$1\omega $同时辐照下熔石英后表面损伤增长的典型结果

    Figure  4.  Typical results of surface damage growth of fused silica under simultaneous irradiation of $3\omega $ and $1\omega $ lasers

    表  1  $3\omega $激光单独辐照下损伤增长阈值的测试实验

    Table  1.   Testing experiments of damage growth threshold irradiated by $3\omega $ lasers

    No.amage growth threshold/(J/cm2
    image processingtraditional method
    1 9.18 5.17
    2 12.39 9.59
    3 9.25 5.56
    4 8.70 5.17
    5 10.98 6.60
    6 11.87 8.64
    7 14.19 8.19
    8 12.44 7.54
    9 9.76 6.50
    10 8.89 5.17
    下载: 导出CSV

    表  2  $3\omega $$1\omega $同时辐照且平均能量密度比为5:1的损伤增长阈值

    Table  2.   Damage growth thresholds under simultaneous irradiation of $3\omega $ and $1\omega $ lasers with an average energy density ratio of 5:1

    No.damage growth treshold/(J/cm2
    3ω1ω
    image processingtraditional methodimage processingtraditional method
    1 6.51 4.79 2.07 0.93
    2 8.76 4.73 2.44 0.96
    3 8.79 4.82 2.47 0.95
    4 7.44 4.76 2.10 0.95
    5 10.58 7.93 4.03 1.58
    6 11.65 6.44 2.87 1.27
    7 10.90 7.87 3.85 1.58
    8 12.26 7.84 3.00 1.58
    9 11.35 6.44 3.17 1.27
    10 9.88 6.28 3.30 1.28
    下载: 导出CSV

    表  3  $3\omega $$1\omega $同时辐照且平均能量密度比为5:5的损伤增长阈值

    Table  3.   Damage growth thresholds under simultaneous irradiation of $3\omega $ and $1\omega $ lasers with an average energy density ratio of 5:5

    No.damage growth treshold(J/cm2
    3ω1ω
    image processingtraditional methodimage processingtraditional method
    1 8.17 4.76 12.99 4.91
    2 5.82 4.00 10.28 4.11
    3 7.40 4.00 10.55 4.11
    4 9.10 4.92 12.42 5.06
    5 12.02 6.19 14.42 6.28
    6 10.01 6.34 14.56 6.28
    7 10.42 6.15 15.14 6.37
    8 8.64 4.79 13.17 4.94
    9 7.98 4.79 10.69 4.94
    10 11.74 6.34 15.70 6.40
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-03-24
  • 修回日期:  2020-06-11
  • 刊出日期:  2020-08-13

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