Fast axial flow 25 kW CO2-laser with unstable resonator for industrial applications

Uwe Habich; Uwe-Klaus Jarosch; Heiko Maly; Rudolph Meyer; Peter Loosen; Norbert Wolf; Thilo Beck; Christoph Hertzler; Reinhard Wollermann-Windgasse

doi:10.1117/12.270209

4 April 1997 Fast axial flow 25-kW CO₂ laser with unstable resonator for industrial applications

Uwe Habich, Uwe-Klaus Jarosch, Heiko Maly, Rudolph Meyer, Peter Loosen, Norbert Wolf, Thilo Beck, Christoph Hertzler, Reinhard Wollermann-Windgasse

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Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270209
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

A high-power industrial carbon-dioxide laser with fast axial gas-flow was set up with eight radio-frequency-excited discharge tubes and four turbo-blowers. With an unstable resonator the maximum output power is 25 kW. The gas flow and the electrodes for the rf-excitation were shaped carefully to achieve homogeneous gas discharges and thus an active medium that introduces only minor aberrations into the beam of the unstable resonator. The beam propagation behavior near focus was studied for a diagnostic optics with long focal length and for processing optics with shorter focal lengths, respectively. Various welding applications in mild steel and stainless steel were carried out.

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Uwe Habich, Uwe-Klaus Jarosch, Heiko Maly, Rudolph Meyer, Peter Loosen, Norbert Wolf, Thilo Beck, Christoph Hertzler, and Reinhard Wollermann-Windgasse "Fast axial flow 25-kW CO₂ laser with unstable resonator for industrial applications", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270209

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