TY  - JOUR
AU  - Momčilović, Miloš
AU  - Trtica, Milan
AU  - Ciganović, Jovan
AU  - Savović, Jelena
AU  - Stašić, Jelena
AU  - Kuzmanović, Miroslav M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5387
AB  - Interaction of a transversely excited atmospheric (TEA) CO2 laser with rough copper surface, at reduced air pressure, was studied. Optical pulse duration of the laser employed was similar to 2 mu s, with the initial spike FWHM of similar to 100 ns. Laser energy density of similar to 32 J/cm(2) (intensity similar to 10(8) W/cm(2)) was above the plasma ignition threshold. Morphological features of the copper can be summarized as follows: (i) superficial damages, which take crater-shaped form at a higher number of accumulated laser pulses, (ii) development of melt pools with visible bubbles inside the damage region, (iii) formation of solid droplets at near periphery, and (iv) presence of halo effect at the irradiated surface. The laser induced surface changes were influenced by the target plasma formation. The formation of plasma influenced the laser-target interaction in two opposite ways: trough absorption of laser energy by the plasma, i. e. trough the effect of plasma shielding, and trough energy transfer from the plasma to the sample. Optical emission spectra were compared for laser induced plasma originated by a single and by cumulative laser pulses. It was found that plasma dimensions and emission intensities have a strong correlation with the number of accumulated laser pulses. Enhancement of both atomic and ionic copper lines was registered when laser induced plasma originated from a single pulse. Chemical analysis of the surface showed a tendency of copper content increase and oxygen content reduction when going from non-irradiated region to the central irradiated region. In the central damage zone, nearly pure copper was present which can be advantageous for some applications due to considerably lower contamination. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Analysis of copper surface features obtained using TEA CO2 laser at reduced air pressure
VL  - 270
SP  - 486
EP  - 494
DO  - 10.1016/j.apsusc.2013.01.067
ER  - 

@article{
author = "Momčilović, Miloš and Trtica, Milan and Ciganović, Jovan and Savović, Jelena and Stašić, Jelena and Kuzmanović, Miroslav M.",
year = "2013",
abstract = "Interaction of a transversely excited atmospheric (TEA) CO2 laser with rough copper surface, at reduced air pressure, was studied. Optical pulse duration of the laser employed was similar to 2 mu s, with the initial spike FWHM of similar to 100 ns. Laser energy density of similar to 32 J/cm(2) (intensity similar to 10(8) W/cm(2)) was above the plasma ignition threshold. Morphological features of the copper can be summarized as follows: (i) superficial damages, which take crater-shaped form at a higher number of accumulated laser pulses, (ii) development of melt pools with visible bubbles inside the damage region, (iii) formation of solid droplets at near periphery, and (iv) presence of halo effect at the irradiated surface. The laser induced surface changes were influenced by the target plasma formation. The formation of plasma influenced the laser-target interaction in two opposite ways: trough absorption of laser energy by the plasma, i. e. trough the effect of plasma shielding, and trough energy transfer from the plasma to the sample. Optical emission spectra were compared for laser induced plasma originated by a single and by cumulative laser pulses. It was found that plasma dimensions and emission intensities have a strong correlation with the number of accumulated laser pulses. Enhancement of both atomic and ionic copper lines was registered when laser induced plasma originated from a single pulse. Chemical analysis of the surface showed a tendency of copper content increase and oxygen content reduction when going from non-irradiated region to the central irradiated region. In the central damage zone, nearly pure copper was present which can be advantageous for some applications due to considerably lower contamination. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Analysis of copper surface features obtained using TEA CO2 laser at reduced air pressure",
volume = "270",
pages = "486-494",
doi = "10.1016/j.apsusc.2013.01.067"
}

Momčilović, M., Trtica, M., Ciganović, J., Savović, J., Stašić, J.,& Kuzmanović, M. M.. (2013). Analysis of copper surface features obtained using TEA CO2 laser at reduced air pressure. in Applied Surface Science, 270, 486-494.
https://doi.org/10.1016/j.apsusc.2013.01.067

Momčilović M, Trtica M, Ciganović J, Savović J, Stašić J, Kuzmanović MM. Analysis of copper surface features obtained using TEA CO2 laser at reduced air pressure. in Applied Surface Science. 2013;270:486-494.
doi:10.1016/j.apsusc.2013.01.067 .

Momčilović, Miloš, Trtica, Milan, Ciganović, Jovan, Savović, Jelena, Stašić, Jelena, Kuzmanović, Miroslav M., "Analysis of copper surface features obtained using TEA CO2 laser at reduced air pressure" in Applied Surface Science, 270 (2013):486-494,
https://doi.org/10.1016/j.apsusc.2013.01.067 . .