Title :
Sub-picosecond laser material interaction
Author :
Kautek, Wolfgang
Author_Institution :
Lab. for Thin Film Technol., Fed. Inst. for Mater. Res. & Testing, Berlin, Germany
Abstract :
Commercially available absorption filters were investigated with respect to their single- and multipulse ablation threshold using laser pulses from a Ti:sapphire laser in the range between 30 and 340 fs. It could be observed, that the threshold fluence decreases for shorter pulse durations. The similarity of the measured multipulse threshold fluences with those of undoped glass material suggests that, for very short pulses, the threshold is independent on the doping level and therefore, linear absorption does not significantly contribute to laser-induced damage.
Keywords :
high-speed optical techniques; laser ablation; optical filters; optical glass; sapphire; solid lasers; titanium; 30 to 340 fs; Al2O3:Ti; Ti:sapphire laser pulses; absorption filters; doping level; laser-induced damage; multipulse ablation threshold fluences; single-ablation threshold; subpicosecond laser material interaction; undoped glass material; Absorption; Dielectrics; Laser ablation; Laser theory; Micromachining; Optical materials; Optical pulses; Power lasers; Protection; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313638
