Title :
Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25/spl deg/C
Author :
Knigge, A. ; Erbert, Gotz ; Jonsson, Johan ; Pittroff, Wolfgang ; Staske, Ralf ; Sumpf, Bernd ; Weyers, M. ; Trankle, Gunther
Author_Institution :
Ferdinand-Braun-Inst. fur Hochstfrequenztech., Berlin, Germany
fDate :
3/3/2005 12:00:00 AM
Abstract :
940 nm laser bars with a vertical divergence of 27/spl deg/ (FWHM) and a filling factor of 30% were operated on passively cooled heatsinks at 25/spl deg/C. The maximum output power was 95 W, the maximum wall-plug efficiency was 73% at 70 W. Reliable CW and quasi-CW operation up to 98 W was demonstrated.
Keywords :
III-V semiconductors; gallium arsenide; heat sinks; indium compounds; laser reliability; quantum well lasers; semiconductor device reliability; 25 degC; 70 W; 73 percent; 940 nm; 98 W; InGaAs; maximum output power; maximum wall-plug efficiency; passively cooled heatsinks; passively cooled laser bars; quasi-CW operation; vertical divergence; wall-plug efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20058180
