Mechanism and effects of surface morphology on absorption characteristics in ultrashort pulse laser processing of sapphire

• Main Authors: Lye, Celescia Siew Mun, Wang, Z. K., Lam, Yee Cheong
• 其他作者: School of Mechanical and Aerospace Engineering
• 格式: Article
• 語言: English
• 出版: 2021
• 主題: Engineering::Mechanical engineering; Total Internal Reflection; Surface Morphology
• 在線閱讀: https://hdl.handle.net/10356/146198
• 機構: Nanyang Technological University

For ultrashort pulse laser processing of a sapphire wafer, nonlinear absorption of laser energy at sufficiently high laser intensity is essential. This study found that in ultrashort pulse laser processing of a sapphire wafer, its surface morphology can have a significant effect on nonlinear absorpt...