Multiscale Modeling of Ultrafast Laser-Material Interactions
Abstract
This paper reports the overall picture of our ongoing efforts to establish the scientific understanding of ultrafast, non-equilibrium laser-material interactions from nanometer to millimeter and from femtosecond to microsecond through comprehensive, integrated multiscale physicochemical modeling and experimental verification. A novel plasma model with quantum treatments is developed to account for significantly varying optical properties. The model is used to successfully predict two uncommon phenomena that are experimentally observed: 1) a flat-bottom crater shape created by a Gaussian beam and 2) repeatable nanoscale structures achieved by pulse train technology. The well known two-temperature model is improved by considering the quantum effects of different heat carriers and then is used to accurately predict the damage thresholds for metals. Preliminary results for these ongoing modeling efforts are reported in this article.
Recommended Citation
H. Tsai and L. Jiang, "Multiscale Modeling of Ultrafast Laser-Material Interactions," Proceedings of the 3rd Pacific International Conference on Applications of Lasers and Optics (2008, Beijing, China), Laser Institute of America, Apr 2008.
Meeting Name
3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008 (2008: Apr. 16-18, Beijing, China)
Department(s)
Mechanical and Aerospace Engineering
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2008 Laser Institute of America, All rights reserved.
Publication Date
18 Apr 2008
