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High-power laser diode package implemented with meniscus slow axis collimator for reduced diode package footprint or improved laser output brightness
High-power laser diode package implemented with meniscus slow axis collimator for reduced diode package footprint or improved laser output brightness
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机译:采用弯月形慢轴准直器的高功率激光二极管封装,可减少二极管封装的占位面积或提高激光输出亮度
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摘要
A high-power laser diode assembly uses a greater number of emitters in a laser diode package or uses larger, wider laser diode emitters to produce higher-power laser output. Each assembly design option includes a meniscus slow axis collimator lens having a light entrance surface imparting strong negative lens surface power to diverge an incident beam outwards and a light exit surface imparting even stronger positive lens surface power to collimate the rapidly diverging beam. In one example, a 5 mm focal length meniscus collimator lens, as compared to a standard 12 mm focal length collimator lens, can reduce by 7 mm the physical path from the collimator lens to the laser diode. In another example, a 15 mm focal length meniscus collimator lens with the same back focal length as that of a standard 12 mm collimator facilitates increasing chip-on-submount width from 200 μm to 250 μm.
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