ATR-FTIR spectroscopic studies on density changes of fused silica induced by localized CO<sub>2</sub> laser treatment

ATR-FTIR spectroscopic studies on density changes of fused silica induced by localized CO₂ laser treatment

Zhang Chuan-Chao^a), Zhang Li-Juan^a), Liao Wei^a), Yan Zhong-Hua^b), Chen Jing^a)†, Jiang Yi-Lan^a), Wang Hai-Jun^a), Luan Xiao-Yu^a), Ye Ya-Yun^a)‡, Zheng Wan-Guo^a), Yuan Xiao-Dong^a)

(a) Typical image of a treated site observed by a photoelastic tool (PTC-702), (b) a typical image of fracture extending induced by introduced small damages for the treated site, and (c) a typical image of introduced large damages for the treated site with laser annealing following the damage mitigation, no fracture extension is observed.