Abstract
Rapid melting and resolidification of a free-standing gold film subject to nano- to femtosecond laser pulses are investigated using the two-temperature model in conjunction with an interfacial tracking method. The interfacial velocity, as well as elevated melting temperature and depressed solidification temperature, in the ultra-fast phase-change process are obtained by considering the interfacial energy balance and nucleation dynamics. A nonlinear electron heat capacity and a temperature-dependent electron–lattice coupling factor for the rapid phase change are taken into account. Effects of laser pulse width and fluence on melting and resolidification are also studied.
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42.62.Eh; 63.20.Kr; 64.70.Dv
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Zhang, Y., Chen, J. Melting and resolidification of gold film irradiated by nano- to femtosecond lasers. Appl. Phys. A 88, 289–297 (2007). https://doi.org/10.1007/s00339-007-4016-7
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DOI: https://doi.org/10.1007/s00339-007-4016-7