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Laser induced plasma - a source of control of the properties of thin films
|Surface and coatings technology 59 (1993), pp.26-31 : Abb.,Lit.|
| Journal Article|
|Fraunhofer ILT ()|
| emission spectroscopy; experimental apparatus; fibre technique; film technology; vapour-plasma plume|
The temporal and spatial properties of laser-induced vapour and/or plasma involved in thin film deposition were investigated as a function of laser parameters (wavelength, power density distribution) and processing variables (target-substrate arrangement, superposed r.f. fields). The composition and ionization state of the vapour and plasma were measured by emission spectroscopy, and the geometry and dynamics of the vapour-plasma plume were measured by high-speed photography. The number and type of ionized species impinging on the growing films were varied in combination with the target-substrate arrangement to generate various film structures which are discussed with respect to applications.