In this paper we will summarize several concepts for adapting beam properties of diode lasers by using specific optical components. For building very compact laser modules of up to 2 kW we already presented a concept based on beam shaping of high fill factor bars. In this paper we will focus on further tailoring the beam properties of these very compact laser modules in the wavelength range from 808 nm up to 1020 nm. Fiber coupling of such modules into an 800 μm NA0.22 fiber yielded 1.6 kW without using polarization coupling. Another example is the generation of a 2.5 kW homogenized line with 40 mm length and a width of 4 mm.
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Fiber coupled lasers
High power diode lasers
Tobias Könning, Bernd Köhler, Paul Wolf, Andreas Bayer, Ralf Hubrich, Christian Bodem, Nora Plappert, Tobias Kindervater, Wilhelm Faßbender, Sascha Dürsch, Matthias Küster, Jens Biesenbach, "Optical components for tailoring beam properties of multi-kW diode lasers," Proc. SPIE 10085, Components and Packaging for Laser Systems III, 100850G (22 February 2017);