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Optical Power of VCSELs Stabilized to 30 ppm/℃ without a TEC

机译：无需TEC即可将VCSEL的光功率稳定在30 ppm /℃

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摘要

This paper reports a method and system comprising a light source, an electronic method, and a calibration procedure for stabilizing the optical power of vertical-cavity surface-emitting lasers (VCSELs) and laser diodes (LDs) without the use thermoelectric coolers (TECs). The system eliminates the needs for custom interference coatings, polarization adjustments, and the exact alignment required by the optical method reported in 2013. It can precisely compensate for the effects of temperature and wavelength drift on photodiode responsivity as well as changes in VCSEL beam quality and polarization angle over a 50℃ temperature range. Data obtained from light sources built with single-mode polarization-locked VCSELs demonstrate that 30 ppm/℃ stability can be readily obtained. The system has advantages over TEC-stabilized laser modules that include: 1) 90% lower relative RMS optical power and temperature sensitivity, 2) a five-fold enhancement of wall-plug efficiency, 3) less component testing and sorting, 4) lower manufacturing costs, and 5) automated calibration in batches at time of manufacture is practical. The system is ideally suited for battery-powered environmental and in-home medical monitoring applications.
机译：本文报告了一种方法和系统，包括光源，电子方法和校准程序，用于在不使用热电冷却器（TEC）的情况下稳定垂直腔面发射激光器（VCSEL）和激光二极管（LD）的光功率。 。该系统消除了对自定义干涉膜，偏振调整以及2013年报道的光学方法所需的精确对准的需求。它可以精确补偿温度和波长漂移对光电二极管响应度的影响以及VCSEL光束质量和极化角在50℃的温度范围内。从单模偏振锁定VCSEL光源获得的数据表明，可以轻松获得30 ppm /℃的稳定性。与TEC稳定的激光模块相比，该系统具有以下优势：1）相对RMS光学功率和温度灵敏度降低90％； 2）壁挂效率提高五倍； 3）部件测试和分类更少，4）更低制造成本； 5）在制造时进行批量自动校准是可行的。该系统非常适合电池供电的环境和家庭医疗监控应用。

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