"Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25 °C"

, G. Erbert, J. Jönsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers and G. Tränkle

Published in:

Electronics Letters, vol. 41, no. 5, pp. 250-251 (2005).

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940 nm laser bars with a vertical divergence of 27° (FWHM) and a filling factor of 30% were operated on passively cooled heatsinks at 25 °C. The maximum output power was 95 W, the maximum wall-plug efficiency was 73% at 70 W. Reliability C Wand quasi-CW operation up to 98 W was demonstrated.

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