High-repetition-rate femtosecond laser micromachining of poly(methyl methacrylate)  

作　　者：罗义鸣 贾威 宋有建 刘博文 胡明烈 柴路 王清月 

机构地区：[1]Ultrafast Laser Laboratory, School of Precision Instruments and Optoelectronics Engineering, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University

出　　处：《Chinese Optics Letters》2015年第7期5-8,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.61275131and 61322502);the National Basic Research Program of China(Grant No.2011CB808101)

摘　　要：Investigations are performed to explore high-repetition-rate femtosecond laser ablation effects on the physical and chemical properties of poly（methyl methacrylate） （PMMA）. A scanning electron microscopy （SEM） is used to characterize the morphology change in the laser-ablated regions. The infrared and Raman spectroscopy reveals that the fundamental structure of the PMMA is altered after laser ablation. We demonstrate the cumulative heating is much greater during high-repetition-rate femtosecond laser ablation, supporting a photothermal depolymerization mechanism during the ablation process.Investigations are performed to explore high-repetition-rate femtosecond laser ablation effects on the physical and chemical properties of poly（methyl methacrylate） （PMMA）. A scanning electron microscopy （SEM） is used to characterize the morphology change in the laser-ablated regions. The infrared and Raman spectroscopy reveals that the fundamental structure of the PMMA is altered after laser ablation. We demonstrate the cumulative heating is much greater during high-repetition-rate femtosecond laser ablation, supporting a photothermal depolymerization mechanism during the ablation process.

关 键 词：Ablation ESTERS Laser ablation Scanning electron microscopy 

分 类 号：O437[机械工程—光学工程]