Advanced Boundary Conditions for the Simulations of Laser Ablation

TL;DR

This paper introduces advanced boundary conditions that effectively eliminate shock waves in laser ablation simulations, enabling more accurate modeling of laser-material interactions across different scales and conditions.

Contribution

It presents novel boundary conditions for laser ablation simulations that suppress shock waves and provides a framework for coupling atomistic and continuum models at high temperatures.

Findings

Boundary conditions effectively erase shock waves in simulations.

Method allows consistent atomistic-continuum coupling at high temperatures.

Laser light penetration depth varies with wavelength, affecting ablation modeling.

Abstract

Irradiating materials with ultra-short laser pulses generates unwanted shock waves which distort the interesting physics. Advanced boundary conditions are presented to erase even very strong shock waves. Depending on the wave length, laser light which leads to ablation may penetrate very deep into the sample. Connection conditions are presented to consistently couple atomistics and continuum description of the sample even at high temperatures together with a discussion of the temperature definition.