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

Robert A. Mitchell III; Douglass W. Schumacher; Enam Chowdhury

doi:10.1117/1.OE.53.12.122507

23 July 2014 Modeling femtosecond pulse laser damage using particle-in-cell simulations

Robert A. Mitchell III, Douglass W. Schumacher, Enam Chowdhury

Author Affiliations +

Funded by: Air Force Office of Scientific Research

Optical Engineering, Vol. 53, Issue 12, 122507 (July 2014). https://doi.org/10.1117/1.OE.53.12.122507

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.

Citation Download Citation

Robert A. Mitchell III, Douglass W. Schumacher, and Enam Chowdhury "Modeling femtosecond pulse laser damage using particle-in-cell simulations," Optical Engineering 53(12), 122507 (23 July 2014). https://doi.org/10.1117/1.OE.53.12.122507

Published: 23 July 2014

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