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)

ATR-FTIR spectra (a) and IR transmission spectra (b) of pristine sample and the central portion of the sample treated by 26.3-W power with a 4-mm diameter CO₂ laser spot.