2-kW cw fiber-coupled diode laser system

Friedhelm Dorsch; Franz X. Daiminger; Petra Hennig; Veit Bluemel

doi:10.1117/12.380893

3 April 2000 2-kW cw fiber-coupled diode laser system

Friedhelm Dorsch, Franz X. Daiminger, Petra Hennig, Veit Bluemel

Proceedings Volume 3889, Advanced High-Power Lasers; (2000) https://doi.org/10.1117/12.380893
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

We have developed a high-power laser system that is based on actively cooled GaAs diode laser stacks. Fast axis collimation and subsequent beam rearrangement generates a symmetric laser beam in respect to the beam parameter product along the two main axes. By polarization and wavelength coupling 100 diode laser elements can be coupled into one fiber at a beam parameter product of less than 200 mm*mrad in both directions and more than 2 kW cw output power at the workpiece. At a spot diameter of less than 1 mm the power density exceeds 250 kW/cm². First material processing experiments show that deep welding at working speeds that meet industrial requirements in steel can be observed. High-power diode lasers show that they become suitable for industrial work.

Citation Download Citation

Friedhelm Dorsch, Franz X. Daiminger, Petra Hennig, and Veit Bluemel "2-kW cw fiber-coupled diode laser system", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); https://doi.org/10.1117/12.380893

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