连续CO_2激光对熔石英表面的增强处理研究  

CW CO 2 Laser Strengthening of Fused Silica Surfaces

作　　者：龚辉[1] 王明利[1] 程雷[1] 夏晋军[1] 李成富[1] 

机构地区：[1]中国科学院上海光机所

出　　处：《中国激光》1997年第3期255-258,共4页Chinese Journal of Lasers

基　　金：大连理工大学三束改性国家实验室资助

摘　　要：研究了连续ＣＯ２激光预辐照对熔石英表面增强的影响，通过ＣＯ２激光对熔石英表面均匀加热，用原子力显微镜和偏光显微镜观察了熔石英表面微观结构变化，发现熔石英表面形成压应力层，表面微裂纹和凹凸度减少。并用调Ｑ１．０６μｍ激光对熔石英表面损伤，其损伤阈值提高了１．５３倍。This paper investigates the effect of laser pre irradiation on strengthening of fused silica surfaces. Fused silica surfaces heated evenly with CW CO 2 laser radiation under go in changes including residual compress stress occurred, peak to volley and microcracks decreased, which are observed by polarized microscopy and atom force microscopy. Damage thresholds of fused silica surfaces measured with a Q switched Nd∶YAG laser increase by a factor of 1.53 after pre irradiation.

关 键 词：激光预辐照 激光损伤 激光表面增强 

分 类 号：TN24[电子电信—物理电子学]