30-kW fast-axial-flow CO2 laser with rf excitation

Christoph Hertzler; Reinhard Wollermann-Windgasse; Uwe Habich; Uwe-Klaus Jarosch; Peter Loosen

doi:10.1117/12.248621

26 August 1996 30-kW fast-axial-flow CO₂ laser with rf excitation

Christoph Hertzler, Reinhard Wollermann-Windgasse, Uwe Habich, Uwe-Klaus Jarosch, Peter Loosen

Proceedings Volume 2788, High-Power Lasers: Gas and Solid State Lasers; (1996) https://doi.org/10.1117/12.248621
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France

Abstract

An industrial high power laser with a maximum output power above 30 kW is presented. Particular reference is made to the compactness and the beam properties of the laser, which are comparable to lasers with much lower power. In order to meet these requirements, we had to optimize the gas flow, and to fine tune the discharge properties. The laser system consists of 8 discharge tubes and 4 turbo blowers; it can be operated from cw to pulsed operation up to 100 kHz over a power range from 5 to 100%. With an unstable resonator and an aerodynamic window the laser has an output power of 25 kW and an unmatched beam quality better than K equals 0.3. This high focusability, the high peak intensity of the far field beam of the unstable resonator and the temporally stable beam guarantee an excellent welding performance. Detailed beam quality analysis of the unfocused and the focused beam is described.

Citation Download Citation

Christoph Hertzler, Reinhard Wollermann-Windgasse, Uwe Habich, Uwe-Klaus Jarosch, and Peter Loosen "30-kW fast-axial-flow CO₂ laser with rf excitation", Proc. SPIE 2788, High-Power Lasers: Gas and Solid State Lasers, (26 August 1996); https://doi.org/10.1117/12.248621

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