Title :
Machining of metals with ultrashort laser pulses: fundamental aspects and their consequences
Author :
Dausinger, Friedrich
Author_Institution :
Inst. fur Strahlwerkzeuge, Stuttgart Univ., Germany
Abstract :
The recipe to increase the quality of material removal processes by reducing the pulse duration to the femtosecond range has turned out to be less curative than expected. Fundamental investigations revealed three sources for remaining flaws: (1) strong deformation of laser beam near focus, (2) essentially thermal nature of ablation process even in femtosecond range, (3) deflection radiation at hole wall.
Keywords :
high-speed optical techniques; laser ablation; laser beam machining; metals; optical focusing; thermo-optical effects; ablation process thermal nature; deflection radiation; hole wall; laser beam deformation; material removal quality; metals machining; pulse duration reduction; ultrashort laser pulses; Drilling; Elementary particle vacuum; Inorganic materials; Laser ablation; Laser beams; Machining; Optical materials; Optical pulses; Solid lasers; Solid state circuits;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313635
