Special Section on Laser Damage II

Modeling femtosecond pulse laser damage using particle-in-cell simulations

[+] Author Affiliations
Robert A. Mitchell

Ohio State University, Department of Physics, 191 W. Woodruff Avenue, Columbus, Ohio 43210, United States

Douglass Schumacher, Enam Chowdhury

Ohio State University, Department of Physics, 191 W. Woodruff Avenue, Columbus, Ohio 43210, United States

Opt. Eng. 53(12), 122507 (Jul 23, 2014). doi:10.1117/1.OE.53.12.122507
History: Received March 20, 2014; Revised May 26, 2014; Accepted June 20, 2014
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Abstract.  We present, to our knowledge, the first adaptation of the particle-in-cell (PIC) simulation method for use in the study of femtosecond pulse laser damage, including the first implementation of the Morse pair-potential for PIC codes. We compare the PIC method to a wide variety of currently used modeling schemes, ranging from purely ab initio molecular dynamics simulations to semi-empirical models with many fitting parameters and show how PIC simulations can provide a complementary approach by filling the gap in theoretical methodology between the two cases. We detail the necessity and implementation of an interatomic pair-potential in PIC studies of laser damage. Finally, we use our model to treat the full laser damage process of a copper target and show that our results compare well to simple scaling laws for crater size.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Robert A. Mitchell ; Douglass Schumacher and Enam Chowdhury
"Modeling femtosecond pulse laser damage using particle-in-cell simulations", Opt. Eng. 53(12), 122507 (Jul 23, 2014). ; http://dx.doi.org/10.1117/1.OE.53.12.122507


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