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Proceedings Paper

Optimized high-power diode laser, laser arrays, and bars for pump applications
Author(s): R. Hülsewede; H. Schulze; J. Sebastian; D. Schröder; J. Meusel; J. Wolf; P. Hennig
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Paper Abstract

Broad area diode laser and diode laser bars are the most efficient light sources. In comparison to solid state laser or gas laser systems the over all beam quality of the diode laser is poor. Thus most application of diode laser bars is high efficient pumping of solid state lasers converting the beam quality and scaling the power of laser systems within the kW range. The pump efficiency and the beam coupling efficiency of the diode laser pumped systems has to be increased to meet the increasing laser market demands for reduced costs. JENOPTIK Diode Lab GmbH (JDL) has optimized their high power brilliance bars to enable reliable high power operation especially, for the 9xx nm wavelength range and low far field divergences. Superior reliability with long operation time of 13,000 hours and high power operation of 200 W are demonstrated for high power bars high filling factor mounted on passively cooled heat sinks. Smaller far field divergence at high power levels requires longer cavity length and higher efficiencies in the beam coupling needs requires lower filling factors. The new high brilliance bars and arrays with 20% filling factor are showing high power operation up to 95 W and a slow axis beam divergence of less than 8° (95% power content).

Paper Details

Date Published: 23 February 2009
PDF: 8 pages
Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71980A (23 February 2009); doi: 10.1117/12.812492
Show Author Affiliations
R. Hülsewede, JENOPTIK Diode Lab. GmbH (Germany)
H. Schulze, JENOPTIK Diode Lab. GmbH (Germany)
J. Sebastian, JENOPTIK Diode Lab. GmbH (Germany)
D. Schröder, JENOPTIK Laserdiode GmbH (Germany)
J. Meusel, JENOPTIK Laserdiode GmbH (Germany)
J. Wolf, JENOPTIK Laserdiode GmbH (Germany)
P. Hennig, JENOPTIK Laserdiode GmbH (Germany)

Published in SPIE Proceedings Vol. 7198:
High-Power Diode Laser Technology and Applications VII
Mark S. Zediker, Editor(s)

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