TY - JOUR
T1 - Theoretical investigation of laser pulse width dependence in a thermal confinement regime
AU - Yingling, Y. G.
AU - Conforti, F. F.
AU - Garrison, Barbara Jane
PY - 2004/1/1
Y1 - 2004/1/1
N2 - Previous molecular dynamics (MD) simulations of ultraviolet (UV) laser ablation demonstrate the distinct dependence of material ejection on laser fluence and laser pulse duration. In this paper, we examine the pulse width dependence when the laser pulse widths are appropriate for the thermal confinement regime. We perform MD simulations of laser ablation with a laser pulse duration of 1 ns and compare with a pulse width of 150 ps as in previous simulations. The simulations confirm that the pulse width in thermal confinement regime does not dramatically influence the molecular ejection mechanism. The simulations reveal differentiations, however, in plume composition and the ablation threshold value.
AB - Previous molecular dynamics (MD) simulations of ultraviolet (UV) laser ablation demonstrate the distinct dependence of material ejection on laser fluence and laser pulse duration. In this paper, we examine the pulse width dependence when the laser pulse widths are appropriate for the thermal confinement regime. We perform MD simulations of laser ablation with a laser pulse duration of 1 ns and compare with a pulse width of 150 ps as in previous simulations. The simulations confirm that the pulse width in thermal confinement regime does not dramatically influence the molecular ejection mechanism. The simulations reveal differentiations, however, in plume composition and the ablation threshold value.
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U2 - 10.1007/s00339-004-2575-4
DO - 10.1007/s00339-004-2575-4
M3 - Article
AN - SCOPUS:4344580264
SN - 0947-8396
VL - 79
SP - 757
EP - 759
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 4-6
ER -