Progress in the development of kilowatt-class diode laser bars for pump applications

A. Pietrzaka, M. Woelza, R. Huelsewedea, M. Zorna, O. Hirsekorna, J. Meuselb, A. Kindsvaterb, M. Schröderb, V. Bluemelb, J. Sebastiana, C. Frevertc, F. Buggec, S. Kniggec, A. Ginolasc, G. Erbertc and P. Crumpc

Published in:

Proc. Advanced Solid State Lasers Conf. (ASSL 2015), Berlin, Germany, Oct. 04-09, ISBN: 978-1-943580-02-6, p. ATh2A.7 (2015).

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Progress in diode laser pump bars is presented. Powers above 1 kW per bar are confirmed at 880 nm, and 940...980 nm, with operating efficiency ~50%. Operation at 200 K increases the efficiency at 1 kW to > 60%.

a JENOPTIK Diode Lab GmbH, Max-Planck-Str. 2, 12489 Berlin, Germany
b JENOPTIK Laser GmbH, Göschwitzer Str. 29, 07745 Jena, Germany
c Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany

OCIS codes:

(140.2010) Diode laser arrays; (140.5560) Pumping.