DocumentCode
2950190
Title
Fast drilling of high accuracy micro holes in stainless steel with DPSS laser
Author
Mehlmann, C. ; Govorkov, S. ; Slohodtchikov, E. ; Wiessner, A. ; Basting, D.
Author_Institution
Lambda Phys. GmbH, Gottingen, Germany
fYear
2000
fDate
10-15 Sept. 2000
Abstract
Summary form only given. Investigating the ablation rate of steel using a diode pumped Q-switched Nd:YAG laser at a repetition rate of 10 kHz we could demonstrate ablation rates up to more than 10 mm per second for 1.5 mm thick steel samples. Using 15 nsec laser pulses the threshold for fast material removal in thin foils was found to be 10 J/cm/sup 2/. Drilling through thicker materials the absorption of laser light in the plasma generated becomes more important, leading to higher energy thresholds.
Keywords
foils; laser ablation; laser beam machining; stainless steel; 10 kHz; 15 ns; Q-switched Nd:YAG laser; YAG:Nd; YAl5O12:Nd; ablation rate; diode pumped solid-state laser; energy threshold; foil; hole drilling; light absorption; plasma generation; repetition rate; stainless steel; Absorption; Diodes; Drilling; Laser ablation; Laser excitation; Optical materials; Optical pulses; Plasma materials processing; Pump lasers; Steel;
fLanguage
English
Publisher
ieee
Conference_Titel
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location
Nice
Print_ISBN
0-7803-6319-1
Type
conf
DOI
10.1109/CLEOE.2000.909967
Filename
909967
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