Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25 °C
A. Knigge, G. Erbert, J. Jönsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers and G. Tränkle
Published in:
Electron. Lett., vol. 41, no. 5, pp. 250-251 (2005).
Abstract:
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.
Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
© 2005 The IEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEE.
Full version in pdf-format.