首页 > 论文 > Chinese Optics Letters > 19卷 > 4期(pp:04)

Combined studies of surface evolution and crack healing for the suppression of negative factors during CO2 laser repairing of fused silica [Early Posting]

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
分享:

摘要

In order to reveal the evolution mechanism of repaired morphology and the material’s migration mechanism on the crack surface in the process of CO2 laser repairing surface damage of fused silica optics, two multi-physics coupling mathematical models with different scales are developed respectively. The physical problems, such as heat and mass transfer, material phase transition, melt flow, evaporation removal and crack healing, are analyzed. Studies show that material ablation and the gasification recoil pressure accompanying the material splash are the leading factors in forming the Gaussian crater with raised rim feature. The use of low-power laser for a long time can fully melt the material around the crack before healing, which can greatly reduce the size of the residual air layer. Combined with the experimental research, the methods to suppress the negative factors (e.g., raised rim, deposited debris, air bubbles) in CO2 laser repairing process are proposed.

广告组1 - 空间光调制器+DMD
补充资料

作者单位:

    Harbin Institute of Technology
    Harbin Institute of Technology
    Harbin Institute of Technology
    Harbin Institute of Technology
    Harbin Institute of Technology
    Harbin Institute of Technology
    China Academy of Engineering Physics Research Center of Laser Fusion

引用该论文

Tan Chao,Zhao Linjie,Chen Mingjun,Cheng Jian,Yin Zhaoyang,Liu Qi,Yang Hao,Liao Wei. Combined studies of surface evolution and crack healing for the suppression of negative factors during CO2 laser repairing of fused silica[J].Chinese Optics Letters,2021,19(4):04.