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硅雪崩光电二极管(Si-APD)的雪崩电压对温度极大地限制了基于Si-APD的单光子探测器在全天候野外条件下的实际应用。提出了一种可以在大环境温度变化范围内稳定工作的Si-APD单光子探测技术。通过制冷与数字偏压补偿相结合的技术,自动补偿Si-APD的工作温度漂移,保持稳定的雪崩增益。实验证明在-40~45℃的温度范围内采用该技术的单光子探测器工作稳定。实验结果表明采用温漂自动补偿的技术后,Si-APD单光子探测器具备了在温度变化较大的外场稳定运行的能力,为机载或星载光子计数激光测量提供了高稳定性的单光子探测技术。
The avalanche voltage of silicon avalanche photodiodes (Si-APDs) greatly limits the practical application of Si-APD based single-photon detectors in all-weather field conditions. A Si-APD single-photon detection technique that can work stably in a wide temperature range is proposed. By combining cooling and digital bias compensation technology, Si-APD automatically compensate for the operating temperature drift, maintaining a stable avalanche gain. Experiments show that in the temperature range of -40 ~ 45 ℃ using single-photon detector of the technology work stable. The experimental results show that the Si-APD single photon detector possesses the capability of stable operation in the outfield with large temperature change after the technology of automatic compensation of temperature drift. It provides a single high stability for on-board or on-board photon counting laser measurement Photon detection technology.