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UV and IR laser radiation's interaction with metal film and teflon surfaces

Published online by Cambridge University Press:  21 August 2003

A.V. FEDENEV ,
S.B. ALEKSEEV ,
I.M. GONCHARENKO ,
N.N. KOVAL' ,
E.I. LIPATOV ,
V.M. ORLOVSKII ,
M.A. SHULEPOV  and
V.F. TARASENKO
A.V. FEDENEV
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
S.B. ALEKSEEV
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
I.M. GONCHARENKO
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
N.N. KOVAL'
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
E.I. LIPATOV
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
V.M. ORLOVSKII
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
M.A. SHULEPOV
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
V.F. TARASENKO
Affiliation:
High Current Electronics Institute, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
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Abstract

The interaction of Xe (λ ∼ 1.73 μm) and XeCl (0.308 μm) laser radiation with surfaces of metal and TiN-ceramic coatings on glass and steel substrates has been studied. Correlation between parameters of surface erosion versus laser-specific energy was investigated. Monitoring of laser-induced erosion on smooth polished surfaces was performed using optical microscopy. The correlation has been revealed between characteristic zones of thin coatings damaged by irradiation and energy distribution over the laser beam cross section allowing evaluation of defects and adhesion of coatings. The interaction of pulsed periodical CO2 (λ ∼ 10.6 μm), and Xe (λ ∼ 1.73 μm) laser radiation with surfaces of teflon (polytetrafluoroethylene—PTFE) has been studied. Monitoring of erosion track on surfaces was performed through optical microscopy. It has been shown that at pulsed periodical CO2-radiation interaction with teflon the sputtering of polymer with formation of submicron-size particles occurs. Dependencies of particle sizes, form, and sputtering velocity on laser pulse duration and target temperature have been obtained.

Keywords

AdhesionlaserTeflonThin filmsSubmicron particles
Type
Research Article
Information
Laser and Particle Beams , Volume 21 , Issue 2 , April 2003 , pp. 265 - 272
Copyright
© 2003 Cambridge University Press

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