Title :
Passively cooled 940 nm laser bars with 73 % wall-plug efficiency and high reliability at 98 W quasi-cw output power
Author :
Knigge, A. ; Erbert, G. ; Jönsson, J. ; Staske, R. ; Sumpf, B. ; Weyers, M. ; Tränkle, G.
Author_Institution :
Ferdinand-Braun-Inst. fur Hochsfrequenstech., Berlin, Germany
Abstract :
Laser bars with low divergency and filling factor were operated on passively cooled heat sinks at 25°C. The maximum wall-plug efficiency was 73 % at 70 W. Excellent reliability was demonstrated at 80 W in cw-operation and 98 W in quasi-cw-operation.
Keywords :
cooling; heat sinks; laser beams; semiconductor device packaging; semiconductor device reliability; semiconductor lasers; thermal management (packaging); 25 C; 70 W; 80 W; 940 nm; 98 W; filling factor; heat sinks; laser reliability; passive cooling; quasicw pulsed laser operation; semiconductor laser bars; wall-plug efficiency; Bars; Degradation; Filling; Heat sinks; Laser modes; Power generation; Power lasers; Testing; Thermal resistance; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1567896
