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Blue and green nitride based laser diodes for projection

机译：基于蓝色和绿色氮化物的激光二极管用于投影

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摘要

Two fields for laser projection have attended big interest since several years due to the potential of high volume markets. One is the mobile projection; ideally a projection unit embedded in a mobile phone. For customer acceptance a reasonable price and high brightness of such a device are crucial. Mobile pico projectors need a brightness of 15 to 20 lumens. While red and blue laser with sufficient output power are available, direct green single mode laser with the necessary power are still under development. We report R&D results of single mode green laser with output power up to 200mW. This demonstrates that long term operation of green laser at 80mW to 100mW output power is realistic. The second field is the business projection with brightness up to several thousands of lumens. The concept here is to use blue high power laser as blue light source and also for the green light by conversion technology. The challenge is to reduce the cost of the light engine which is strongly dominated by the output power of the laser. We report R&D results of blue high power laser with an output power up to 3 watt.
机译：由于具有巨大的市场潜力，自几年以来，激光投影的两个领域引起了人们的极大兴趣。一种是移动投影;另一种是移动投影。理想情况下，是嵌入在手机中的投影单元。为了使客户接受，这种设备的合理价格和高亮度至关重要。移动微型投影仪需要15至20流明的亮度。虽然可以提供具有足够输出功率的红色和蓝色激光器，但仍在开发具有必要功率的直接绿色单模激光器。我们报告了输出功率高达200mW的单模绿色激光器的研发成果。这证明了绿色激光器在80mW至100mW输出功率下的长期运行是现实的。第二个领域是亮度高达几千流明的商业投影。这里的概念是将蓝色高功率激光用作蓝色光源，并通过转换技术将其用于绿色光。挑战在于降低光引擎的成本，该成本主要由激光器的输出功率决定。我们报告了输出功率高达3瓦的蓝色高功率激光器的研发成果。

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