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Multiemitter 638-nm high-power broad area laser diodes for display application

机译：用于显示应用的Multiemitter 638 nm大功率广域激光二极管

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摘要

Laser-based displays have gathered much attention because only the displays can express full color gamut of Ultra-HDTV, ITU-R BT.2020. There are many types of laser-based displays. A projector with a single spatial light modulator is mainstream in the displays so far. This projector uses the laser light sources under pulse with duty of 20% to 50%. We improve a triple-emitter red color 638-nm high-power broad area laser diode (LD) for this application. Countermeasures are adopted to improve the output power characteristics and strengthen the facet to the fatal degradation. The improved triple emitter shows the output of 5.0 W at the injection current of 5 A under pulse with duty of 30%, case temperature of 25℃. The output is increased by 4.1% compared to our former one. The peak wall plug efficiency reaches to 41.6% under 25℃. The long-term aging test is also performed. Mean time to failure of the improved LD is estimated 72,000 h under the output of 3.5 W, pulse condition with duty of 30%. The value is ～3.3 times longer than that of the former.
机译：基于激光的显示器备受关注，因为只有这些显示器才能表现出ITU-R BT.2020超高清电视的全色域。有许多类型的基于激光的显示器。迄今为止，具有单个空间光调制器的投影仪是显示器的主流。本投影机使用脉冲占空比为20％至50％的激光光源。我们针对此应用改进了三发射极红色638 nm高功率广域激光二极管（LD）。采取了改善输出功率特性的措施，并加强了致命退化的方面。改进的三重发射器在占空比为30％，表壳温度为25℃的脉冲下，在5 A的注入电流下显示5.0 W的输出。与我们以前的产量相比，产量增加了4.1％。在25℃下，峰值堵壁效率达到41.6％。还进行了长期老化测试。在3.5 W输出，占空比为30％的脉冲条件下，改进型LD的平均故障时间估计为72,000 h。该值是前者的〜3.3倍。

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