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Bulk damage and stress behavior of fused silica irradiated by nanosecond laser

机译:纳秒激光辐照熔融石英的整体破坏和应力行为

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摘要

The laser-induced bulk damage and stress behaviors of fused silica are studied by using a neodym-ium-doped yttrium aluminum garnet laser operated at 1064 nm with pulse width of 11.7 ns. Three zones of bulk damage are defined: columned cavity zone, compacted zone, and crack zone. The damage morphology and stress distribution are characterized by a three-dimensional digital microscope and a polarizer stress analyzer. The results show that the stress in the columned cavity zone and compacted zone is approximately zero. From the laser beam center to fringe, both tensile and compressive stresses in the crack zone increase abruptly and linearly and then decrease exponentially. Thermal annealing is used to prove the phase retardation caused by the residual stress. The formation mechanism of bulk damage is also discussed.
机译:通过使用掺钕钕钇铝石榴石激光器在1064 nm脉冲宽度为11.7 ns的条件下研究了激光诱导的熔融石英的整体破坏和应力行为。定义了三个整体破坏区域:圆柱状空腔区域,压实区域和裂纹区域。损伤形态和应力分布用三维数字显微镜和偏振器应力分析仪表征。结果表明,圆柱空腔区域和压实区域的应力近似为零。从激光束中心到边缘,裂纹区域中的拉应力和压应力都急剧线性地增加,然后呈指数下降。使用热退火来证明由残余应力引起的相位延迟。还讨论了块状破坏的形成机理。

著录项

  • 来源
    《Optical engineering》 |2014年第4期|047103.1-047103.6|共6页
  • 作者单位

    University of Electronic Science and Technology of China, School of Physical Electronics, Chengdu 610054, China,Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    University of Electronic Science and Technology of China, School of Physical Electronics, Chengdu 610054, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    University of Electronic Science and Technology of China, School of Physical Electronics, Chengdu 610054, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;

    University of Electronic Science and Technology of China, School of Physical Electronics, Chengdu 610054, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fused silica; bulk damage; microexplosion; residual stress; annealing;

    机译:熔融石英大量损坏;微爆炸残余应力退火;

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