联系我们  |  网站地图  |  English   |  移动版  |  中国科学院 |ARP
站内搜索:
首页 简介 管理部门 科研部门 支撑部门 研究队伍 科研成果 成果转化 研究生教育 党建与创新文化 科普 信息公开 OA系统
学术活动
第43期人工晶体讲坛
东生讲坛第34期:纤维材料...
动态腐蚀法在观察晶体缺陷...
基于激光干涉成像的颗粒测...
新时期科技期刊发展探索:...
车用燃料电池技术研究进展
古陶瓷与工业陶瓷工程研究...
基于肿瘤微环境响应的诊疗...
无机功能材料与器件重点实...
功能材料与传感器发展的机...
先进质谱技术与应用研究
Forging Molecular Bonds ...
Magnetic nanoprobes for ...
Nature系列期刊助力科研工...
单胶束基元定向合成功能介...
现在位置:首页>新闻动态>学术活动
Tracking and Understanding Laser Damage Events
发布时间: 2020-12-31 15:36 | 【 【打印】【关闭】

SEMINAR 

The State Key Lab of  

High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences 

  中 国 科 学 院 上 海 硅 酸 盐 研 究 所 高 性 能 陶 瓷 和 超 微 结 构 国 家 重 点 实 验 室

 

 

Tracking and Understanding Laser Damage Events

 

赵元安 

 

中国科学院上海光机所 

时间:202116日(星期三)上午 10:00 

地点:嘉定园区F42)会议室

 

欢迎广大科研人员和研究生参与讨论!

 

联系人:易志国(69163723 

2021年度国家重点实验室特邀学术报告   

  报告摘要: 

  Laser damage of optical elements in high power laser systems is a longstanding problem since the invention of first laser. Driven by construction of high power laser facilities all over the world, laser damage researches are in a long period of prosperity in the past fifty years. The basic damage mechanisms, thermal and nonlinear damage, established in 1970s told us the story of laser damage events, but laser damage problems are still challenging the laser community and industrials as the laser power grows higher and higher with the developments of the laser technologies. Furthermore, the micro-defects initiating thermal damage depend on the fabrication processes of various optical elements. The comprehensive metrologies were developed to track the origin of the micro-defects come along with fabrications. The influences of defects were analysed, and optimization of fabrication processing and the post treatment measures were adopted to relieve damage. However, there are lots of laser damage events still puzzled us, especially for the UV wavelength or the ultra-short pulse laser. The damage events usually appeared as very small pits or pinpoints which may correlate to nanoscale damage precursors. Unfortunately, it is difficult to detect nano-precursors by traditional optical measures because the precursors are optical invisible for most cases. Novel methods were developed to retrieve the characteristics of the precursors. 

  主讲人简介:

Yuanan Zhao is a Professor at Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P R China. In 2005, he received a doctorate in Optical Engineering from Graduate school of Chinese Academy of Sciences. Since then, he worked on laser damage of optics in high power lasers and metrologies for high quality laser optics. 

版权所有 中国科学院上海硅酸盐研究所 沪ICP备05005480号-1
长宁园区地址:上海市长宁区定西路1295号 电话:86-21-52412990 传真:86-21-52413903 邮编:200050
嘉定园区地址:上海市嘉定区和硕路585号  电话:86-21-69906002 传真:86-21-69906700 邮编:201899