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Proceedings Paper

Pulse lengthening of a TE-CO2 laser for materials processing
Author(s): H. Arenz; G. Sipos; Peter G. Bickel; Jens Christiansen; E. Eberl; D. H. H. Hoffmann
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Paper Abstract

Results of investigations on pulse lengthening of a TE- carbon-dioxide-laser for materials processing is are reported. The laser is used in two main modifications both working at an absolute pressure of lower than 300 mbar. With a folded resonator pulse durations up to 20 microseconds have been achieved. As there is no longer the initial peak but a descending saw-tooth like form, on can get mean powers up to 100 kW and maximum powers up to 300 kW. Using a so- called hybrid-resonator containing a cw-carbon-dioxide- laser-section, there are even better pulse shapes within about 10 - 15 microseconds, but containing lower pulse energies up to 1/2 joule. The influence of parameters e.g., absolute pressure of working gas or gas mixture on pulse form and duration and results of cutting and drilling of metals like Al or Cu are presented.

Paper Details

Date Published: 26 August 1996
PDF: 9 pages
Proc. SPIE 2788, High-Power Lasers: Gas and Solid State Lasers, (26 August 1996); doi: 10.1117/12.248602
Show Author Affiliations
H. Arenz, Univ. Erlangen-Nuernberg (Germany)
G. Sipos, Univ. Erlangen-Nuernberg (Germany)
Peter G. Bickel, Univ. Erlangen-Nuernberg (Germany)
Jens Christiansen, Univ. Erlangen-Nuernberg (Germany)
E. Eberl, Univ. Erlangen-Nuernberg (Germany)
D. H. H. Hoffmann, Univ. Erlangen-Nuernberg (Germany)

Published in SPIE Proceedings Vol. 2788:
High-Power Lasers: Gas and Solid State Lasers
Tommaso Letardi; Horst Weber, Editor(s)

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