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重频脉冲CO2激光损伤K9玻璃的实验
  • ISSN号:1007-2276
  • 期刊名称:《红外与激光工程》
  • 时间:0
  • 分类:TN249[电子电信—物理电子学]
  • 作者机构:[1]脉冲功率激光技术国家重点实验室(电子工程学院),安徽合肥230037
  • 相关基金:国家自然科学基金(40905011)
中文摘要:

对脉冲CO2激光在不同重频模式下损伤K9玻璃进行了实验研究。采用输出能量为10J,脉宽为90ns,重复频率在100Hz至300Hz之间连续可调的脉冲CO2激光器,对K9玻璃样品进行了激光损伤实验,观察到两次不同重频条件下样品的损伤形貌。实验结果表明,重频越高,对样品的损伤程度就越严重;应力损伤成为K9玻璃激光损伤的最主要的原因,在重频强激光的辐照下,K9玻璃表面出现强烈的等离子体闪光,伴随明显的熔融气化破坏,并形成等离子体爆轰波。爆轰波对玻璃材料产生了严重的力学冲击作用,这种应力作用足以对K9玻璃造成毁灭性破坏。运用有限元分析对激光辐照K9玻璃的温度与应力分布进行仿真,其计算结果与实验基本吻合。

英文摘要:

In this paper, the experiment on damage in K9 glass induced by pulsed CO2 laser under different repetition rates was carded out, which had a pulse width of 90 ns. The laser pulse energy was 10 J and the repetition rate was kept within the range of 100 Hz to 300 Hz. The damage morphologies of two kind repetition rates after laser irradiation were characterized. The experimental results indicate that the effect of laser irradiation on samples can be affected considerably by the change of laser repetition rate, and the intensity of damage morphology on the sample increases with the laser repetition rate, and the damage in K9 glass induced by pulsed CO2 laser is dominated by stress. As a result, the plasma detonation wave induced by laser occured, the material was broken result from the melting and evaporation of K9 glass. It is shown that the plasma detonation wave affected stress damage considerably, and this mechanical effect almost destroyed K9 glass sample. A numerical simulation was performed to calculate temperature and stress distributions in K9 glass sample irradiated by pulsed CO2 laser using finite element method. The model prediction was in line with the experiment data.

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期刊信息
  • 《红外与激光工程》
  • 中国科技核心期刊
  • 主管单位:中国航天科工集团
  • 主办单位:天津津航技术物理研究所
  • 主编:张锋
  • 地址:天津市空港经济区中环西路58号
  • 邮编:300308
  • 邮箱:irla@csoe.org.cn
  • 电话:022-58168883 /4/5
  • 国际标准刊号:ISSN:1007-2276
  • 国内统一刊号:ISSN:12-1261/TN
  • 邮发代号:6-133
  • 获奖情况:
  • 1996年获航天系统第五次科技期刊评比三等奖,1998年获航天系统第六次科技期刊评比二等奖,1997-2001年在天津市科技期刊评估中被评为一级期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:17466