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  4. Optical and particle properties of vapours/plasmas during material removal with laser radiation
 
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1995
Conference Paper
Title

Optical and particle properties of vapours/plasmas during material removal with laser radiation

Abstract
The electron density, the plasma front velocity and the geometry of an expanding vapour/plasma are investigated during the material removal of Al2O3 with pulsed CO2 laser radiation. The results obtained by the beam deflection method are compared with those of optical emission spectroscopy and plasma modelling. The size and density of condensed particles are determined from measured probe beam extinctions during the material removal of Al with pulsed Nd: YAG laser radiation.
Author(s)
Kogel-Hollacher, M.
Stamm, H.
Niessen, M.
Alunovic, M.
Treusch, H.G.
Aden, M.
Kreutz, E.W.
Mainwork
ICALEO '95. 14th International Congress on Applications of Lasers and Electro-Optics. Advance Program  
Conference
International Congress on Applications of Lasers and Electro Optics (ICALEO) 1995  
Language
English
Fraunhofer-Institut für Lasertechnik ILT  
Keyword(s)
  • electron density

  • infrared detector

  • laser ablation

  • photon drag detector

  • probe laser beam

  • resulting layer

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