典型文献
Multilayer dielectric grating pillar-removal damage induced by a picosecond laser
文献摘要：
Multilayer dielectric gratings typically remove multiple-grating pillars after picosecond laser irradiation;however,the dynamic formation process of the removal is still unclear.In this study,the damage morphologies of multilayer dielectric gratings induced by an 8.6-ps laser pulse were closely examined.The damage included the removal of a single grating pillar and consecutive adjacent grating pillars and did not involve the destruction of the internal high-reflection mirror structure.Comparative analysis of the two damage morphological characteristics indicated the removal of adjacent pillars was related to an impact process caused by the eruption of localized materials from the left-hand pillar,exerting impact pressure on its adjacent pillars and eventually resulting in multiple pillar removal.A finite-element strain model was used to calculate the stress distribution of the grating after impact.According to the electric field distribution,the eruptive pressure of the dielectric materials after ionization was also simulated.The results suggest that the eruptive pressure resulted in a stress concentration at the root of the adjacent pillar that was sufficient to cause damage,corresponding to the experimental removal of the adjacent pillar from the root.This study provides further understanding of the laser-induced damage behavior of grating pillars and some insights into reducing the undesirable damage process for practical applications.
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作者姓名：
Kun Shuai;Xiaofeng Liu;Yuanan Zhao;Keqiang Qiu;Dawei Li;He Gong;Jian Sun;Li Zhou;Youen Jiang;Yaping Dai;Jianda Shao;Zhilin Xia
作者机构：
School of Materials Science and Engineering,Wuhan University of Technology,Wuhan,China;Laboratory of Thin Film Optics,Shanghai Institute of Optics and Fine Mechanics,Shanghai,China;National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei,China;School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai,China;National Laboratory on High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,CAS,Shanghai,China;Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang,China;Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou,China
文献出处：
引用格式：
[1]Kun Shuai;Xiaofeng Liu;Yuanan Zhao;Keqiang Qiu;Dawei Li;He Gong;Jian Sun;Li Zhou;Youen Jiang;Yaping Dai;Jianda Shao;Zhilin Xia-.Multilayer dielectric grating pillar-removal damage induced by a picosecond laser)[J].高功率激光科学与工程（英文版）,2022(06):66-74
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0.497669
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