Recent advances in high power blue laser diodes
2017 IEEE High Power Diode Lasers and Systems Conference (HPD)(2017)
摘要
We present the improvements in power conversion efficiency of high power multi-mode blue laser diodes. The improved device architecture shows a peak wall plug efficiency of ~44.2 % at room temperature. Furthermore, the device delivers an optical output power reaching 3.7 W at the peak efficiency. The signs of thermal roll-over at room temperature start appearing near 5 A of injection current for this particular device design. The device generates an optical output power of more than 7.5 W with overstressed current injection at room temperature. We have also evaluated the high temperature electro-optical performance. The roll-over point is shifted by approximately 1 A when the device is operating at 85°C. The optical output power reaches 4.8 W at thermal roll-over.
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关键词
Nitride laser,blue high power laser diode,power conversion efficiency
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