期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 19, 期 13-16, 页码 960-962出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2007.898820
关键词
laser bars; laser diodes; quantum conversion efficiency; quantum-well laser
Near 1 kW of continuous-wave output power has been obtained from a single I-cm-wide diode-laser bar. Mounted on a water-cooled microchannel heat sink, the operating wavelength was near 940 nm (at similar to 400 W) and the measured thermal resistance was as low as 0.08 degrees C/W. Maximum power conversion efficiencies (PCEs) of 70% and 67% were obtained from high-fill-factor bars with cavity lengths of 4 and 5 mm, respectively. A maximum PCE of 72.2% was achieved with 3-mm broad-area single emitters. On-going lifetime data may signal the stable operation at unprecedented powers.
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