ia, M

iwa Laser burst l fil sive ase or e ed wi al a a pu rate, compared to the single pulse. It was also demonstrated that for a given total fluence the ablation s of m with o dec laser m o/nano terials less de have been employed to simulate thermal problems for metals irradiated by ultrashort-pulsed lasers. For the fs-laser pulse train heating, Huang et al. [10] studied energy transport and melting process in a gold film. Temperature-dependent thermo-physical properties were employed; but, constant optical properties were (R) and absorption coefficient (a) inside a treated material due to elevated temperature could significantly alter the magnitude and distribution of laser energy deposition, leading to a different ther-mal response than that described with constant optical properties at room temperature. This may be the critical question which often does not allow directly comparing experimental and modeling data. Tomatch experimental results, particular values for a constant surface reflectivity [18,19] or an absorbed laser fluence [20] together with a constant absorption coefficient at room * Corresponding author. Contents lists available at International Journal w.