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Comparison of the laser ablation process on Zn and Ti using pulsed digital holographic interferometry
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0003-4853-870X
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0001-8355-2414
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0002-3569-6795
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0003-4879-8261
Vise andre og tillknytning
2010 (engelsk)Inngår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 256, nr 14, s. 4633-4641Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Pulsed digital holographic interferometry has been used to compare the laser ablation process of a Q-switched Nd-YAG laser pulse (wavelength 1064 nm, pulse duration 12 ns) on two different metals (Zn and Ti) under atmospheric air pressure. Digital holograms were recorded for different time delays using collimated laser light (532 nm) passed through the volume along the target. Numerical data of the integrated refractive index field were calculated and presented as phase maps. Intensity maps were calculated from the recorded digital holograms and are used to calculate the attenuation of the probing laser beam by the ablated plume. The different structures of the plume, namely streaks normal to the surface for Zn in contrast to absorbing regions for Ti, indicates that different mechanisms of laser ablation could happen for different metals for the same laser settings and surrounding gas. At a laser fluence of 5 J/cm2, phase explosion appears to be the ablation mechanism in case of Zn, while for Ti normal vaporisation seems to be the dominant mechanism.

sted, utgiver, år, opplag, sider
2010. Vol. 256, nr 14, s. 4633-4641
HSV kategori
Forskningsprogram
Experimentell mekanik; Produktionsutveckling
Identifikatorer
URN: urn:nbn:se:ltu:diva-6224DOI: 10.1016/j.apsusc.2010.02.063ISI: 000276629300039Scopus ID: 2-s2.0-77950551512Lokal ID: 46d30360-27a7-11df-be83-000ea68e967bOAI: oai:DiVA.org:ltu-6224DiVA, id: diva2:979101
Merknad
Validerad; 2010; 20100304 (ysko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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Amer, EynasGren, PerKaplan, AlexanderSjödahl, Mikael
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