This letter presents for the first time a new type of indirect time-of-flight (ToF) detection unit based on avalanche photodiode (APD) which is simple in structure and easy to integrate. Leveraging the advantages afforded by the direct ToF and indirect ToF technology, it has been verified by simulation that it has good time resolution, and the measurement results show a standard deviation of 3.17 mm at 4 m and less than 35 cm for distances up to 7.5 m. At the same time, this work proposes a new lateral APD model with a high responsivity reaching up to 4.37 A/W and low breakdown voltage of ~9.4 V.

中文翻译：

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基于雪崩光电二极管的简单 I-TOF 模块

这封信首次提出了一种结构简单、易于集成的基于雪崩光电二极管（APD）的新型间接飞行时间（ToF）检测单元。利用直接ToF和间接ToF技术的优势，经仿真验证具有良好的时间分辨率，测量结果显示4m处标准偏差为3.17mm，7.5以内距离小于35cm米。同时，这项工作提出了一种新的横向 APD 模型，该模型具有高达 4.37 A/W 的高响应度和~9.4 V 的低击穿电压。