Numerical analysis of laser ablation using the axisymmetric two-temperature model

Dziatkiewicz, J.; Majchrzak, Ewa

doi:10.1063/1.5019065

Cited by 1 publication

(1 citation statement)

References 10 publications

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“…At present, after years of development, the TTM has proposed many improved models [39][40][41][42][43][44][45][46], such as dual-parabolic two-step model (DPTSM) [14], hyperbolic two-step model (HTSM) [39], dual-hyperbolic two-step model (DHTSM) [40], semiclassical two-temperature model (STTM) [42]. The successful application of DHTSM [47][48][49][50][51][52] also indicates that the effect of the hyperbolic effect or relaxation time cannot be ignored, especially when the laser pulse time is comparable to or shorter than the electron relaxation time [49]. At the same time, the method of simulating the interaction between laser and material by coupling the TTM with other methods has also been developed, such as the coupling of TTM and molecular dynamics method (TTM-MD) [53][54][55][56], the coupling of TTM and hydrodynamic model (TTM-HD) [57,58], and the coupling of TTM and classical heat accumulation model [59].…”

Section: Introductionmentioning

confidence: 99%

A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect

Tan

Wang

et al. 2018

Energies

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In this paper, a non-Fourier heat conduction model of ultra-short pulsed laser ablation of metal is established that takes into account the effect of the heat source, laser heating of the target, the evaporation and phase explosion of target material, the formation and expansion of the plasma plume, and interaction of the plasma plume with the incoming laser. Temperature dependent optical and thermophysical properties are also considered in the model due to the properties of the target will change over a wide range during the ultra-short pulsed laser ablation process. The results show that the plasma shielding has a great influence on the process of ultra-short pulsed laser ablation, especially at higher laser fluence. The non-Fourier effect has a great influence on the temperature characteristics and ablation depth of the target. The ultra-short pulsed laser ablation can effectively reduce the heat affected zone compared to nanosecond pulsed laser ablation. The comparison between the simulation results and the experimental results in the literature shows that the model with the plasma shielding and the non-Fourier effect can simulate the ultra-short pulsed laser ablation process better.

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