کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5369564 1388443 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser ablation of metals by femtosecond pulses: Theoretical and experimental study
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Laser ablation of metals by femtosecond pulses: Theoretical and experimental study
چکیده انگلیسی

We have investigated ultrashort laser micromachining of metals, both from the point of view of the basic physical processes, and the technological implications. The process of hole drilling of Ni with ≈300 fs SHG (λ = 527 nm) Nd-glass and Al samples with 100 fs Ti:sapphire (λ = 800 nm) laser pulses, respectively, has been experimentally addressed by using time-gated optical emission spectroscopy of the ablated material and SEM analysis of the targets. The ablation process has also been analyzed by classical, molecular dynamics (MD) simulations, by using a Morse potential to describe the interaction between the atoms, and taking into account the electron heat diffusion contribution. The dependence of the ablation depth on laser fluence, as measured by SEM analysis, is in good agreement with the numerical simulations and is also well correlated with the optical emission yield of the expanding plume.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 19, 31 July 2007, Pages 7761-7766
نویسندگان
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