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Optical Engineering

Modeling femtosecond pulse laser damage using particle-in-cell simulations
Author(s): Robert A. Mitchell; Douglass W. Schumacher; Enam Chowdhury
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Paper 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 <italic<ab initio</italic< 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.

Paper Details

Date Published: 23 July 2014
PDF: 6 pages
Opt. Eng. 53(12) 122507 doi: 10.1117/1.OE.53.12.122507
Published in: Optical Engineering Volume 53, Issue 12
Show Author Affiliations
Robert A. Mitchell, The Ohio State Univ. (United States)
Douglass W. Schumacher, The Ohio State Univ. (United States)
Enam Chowdhury, The Ohio State Univ. (United States)

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