Pulse lengthening of a TE-CO2 laser for materials processing

H. Arenz; G. Sipos; Peter G. Bickel; Jens Christiansen; E. Eberl; D. H. H. Hoffmann

doi:10.1117/12.248602

26 August 1996 Pulse lengthening of a TE-CO₂ laser for materials processing

H. Arenz, G. Sipos, Peter G. Bickel, Jens Christiansen, E. Eberl, D. H. H. Hoffmann

Proceedings Volume 2788, High-Power Lasers: Gas and Solid State Lasers; (1996) https://doi.org/10.1117/12.248602
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France

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.

Citation Download Citation

H. Arenz, G. Sipos, Peter G. Bickel, Jens Christiansen, E. Eberl, and D. H. H. Hoffmann "Pulse lengthening of a TE-CO₂ laser for materials processing", Proc. SPIE 2788, High-Power Lasers: Gas and Solid State Lasers, (26 August 1996); https://doi.org/10.1117/12.248602

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