A 15-kW fiber-coupled diode laser for pumping applications

David G. Matthews; Klaus Kleine; Volker Krause; Arnd Koesters; Daniel Duennwald; Silke Pflueger

doi:10.1117/12.906464

30 January 2012 A 15-kW fiber-coupled diode laser for pumping applications

David G. Matthews, Klaus Kleine, Volker Krause, Arnd Koesters, Daniel Duennwald, Silke Pflueger

Proceedings Volume 8241, High-Power Diode Laser Technology and Applications X; 824103 (2012) https://doi.org/10.1117/12.906464
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

New solid-state laser architectures require higher pump powers. In this paper we report the development of a new fibercoupled diode laser capable of generating 15 kW from a 2 mm diameter fiber with a 0.22 NA, representing a brightness of 220 mm.mrad at a single wavelength. In this design a special beam transformation technique has been developed to achieve these specifications at a single wavelength without the wavelength combination technique employed in high power diode lasers used in material processing applications. The specific laser presented here is at 938 nm with a spectral bandwidth of 3.1 nm FWHM, but the same architecture is possible for wavelengths between 910 and 1060 nm.

Citation Download Citation

David G. Matthews, Klaus Kleine, Volker Krause, Arnd Koesters, Daniel Duennwald, and Silke Pflueger "A 15-kW fiber-coupled diode laser for pumping applications", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 824103 (30 January 2012); https://doi.org/10.1117/12.906464

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