国外学者用1064 nm激光对pickoff镜进行预处理,发现损伤阈值平均提高38.8％。国内研究者用CO2激光中度抛光后,熔石英基片的损伤阈值提到了30％左右,激光波长、扫描方式等对处理效果影响也比较明显。介绍了三种公认的预处理机制,将离线与在线处理方式做了简单地比较,并对国内外激光预处理技术的发展和前景进行了展望。

1064 nm laser is used by abroad researchers to condition pickoff mirror films, and obtained 38.8% increase for laser induced damage threshold (LIDT). Domestic workers also find 30% increase for LIDT after CO2 laser conditioning on fused silica. Three kinds of mechanisms for laser conditioning are also introduced. A brief comparison is made between the off-line and on-line conditioning technologies. Finally, the future development is introduced for the domestic and abroad laser conditioning technologies.