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Ablation of laser irradiated metal surfaces

: Schulz, W.; Simon, G.; Eißfeldt, H.

Kreutz, E.W.; Quenzer, A. ; Association Nationale de la Recherche Technique -ANRT-; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
High Power Lasers. Sources, laser-material interactions, high excitations, and fast dynamics in laser processing and industrial applications
Bellingham/Wash.: SPIE, 1987 (Proceedings of SPIE 801)
ISBN: 0-89252-836-2
pp.314-319 : Abb.,Lit.
International Symposium on Optical and Optoelectronic Applied Science and Engineering <4, 1987, The Hague>
Conference Paper
Fraunhofer ILT ()
ablation; approximation; equation; macroscopic shape; rippling; surface; thickness

The time-development of a laser irradiated surface in the case of a high ablation rate is given by the local energy balance. The analytical solution is found by the method of characteristics. The macroscopic shape of the metal decays into a selfsimilar surface shape. The ablation rate depends on the amplitude and the spatial period of the surface such that the contour is smoothed out in the course of time. Linear polarization of the laser beam induces an anisotropy of the irradiated surface.