Microscopic energy transport through photon-electron- phonon interactions during ultrashort laser ablation of wide bandgap materials Part II: Phase change

Lishan Li, Lan Jiang*, Hai Lung Tsai, Sumei Wang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

6 引用 (Scopus)

摘要

Energy transport in femtosecond laser ablation can be divided into two stages: 1) laser energy absorption by electrons during the pulse irradiation, and 2) phase change stage that absorbed energy redistributes in bulk materials leading to material removals. We review challenges in understanding the phase change process mainly for the femtosecond ablation of wide bandgap materials at the intensities on the order of 1013-1014 W/cm2. Thermal vaporization and Coulomb explosion are two major mechanisms considered for material removals. Based on the discussions of energy transport, the estimation equations and unsolved problems for threshold fluence and ablation depth are presented.

源语言英语
页(从-至)1029-1036
页数8
期刊Zhongguo Jiguang/Chinese Journal of Lasers
36
5
DOI
出版状态已出版 - 5月 2009

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