2D calculations of the thermal effects due to femtosecond laser-metal interaction

Abstract : Experimental results previously published have shown that the radial heat affected zone (HAZ) for a 500 nm thick Al sample in the femtosecond case is less than 2 mm [Appl. Phys. Lett. 80 (2002) 3886]. The spread of radial thermal effects for femtosecond pulses is calculated, by developing a two-dimensional version of the two temperature model (TTM). The case of an axi-symmetrical geometry is simulated by a finite element technique. A physical metallurgy approach is used to define and to estimate the radial HAZ width from the calculations. The evolution of the temperature as a function of time is studied, leading to a radial HAZ width of 220 nm for 500 nm thick Al samples. Similar calculations in the nanosecond regime are also performed and compared to the femtosecond case.
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https://hal-ujm.archives-ouvertes.fr/ujm-00118069
Contributor : Nicolas Huot <>
Submitted on : Monday, December 4, 2006 - 11:02:26 AM
Last modification on : Thursday, October 17, 2019 - 12:33:37 PM

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Stéphane Valette, Ronan Le Harzic, Nicolas Huot, Éric Audouard, Roland Fortunier. 2D calculations of the thermal effects due to femtosecond laser-metal interaction. Applied Surface Science, Elsevier, 2005, 247 (1-4), pp.238-242. ⟨10.1016/j.apsusc.2005.01.080⟩. ⟨ujm-00118069⟩

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