Abstract

In this paper, an equivalent circuit modeling method of photodetector is proposed, and the equivalent circuit model of quantum dots photodetector is established. Experimental results show that the simulation curves and parameters agree very well with the measured results. The 10 picowatts power focused laser is readout based on readout circuits and low light level detection system at 77 K temperature. The 7 mV response voltage is achievable under 29 μs integration time and −3.1 V bias voltage. The voltage responsivity has reached 7 × 10⁸ V/W.

中文翻译：

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基于量子点光电探测器的建模与微光检测

摘要

本文提出了一种光电探测器等效电路建模方法，建立了量子点光电探测器等效电路模型。实验结果表明，仿真曲线和参数与实测结果非常吻合。10 皮瓦功率聚焦激光是基于读出电路和 77 K 温度下的低光级检测系统读出的。7 mV 响应电压可在 29 μs 积分时间和 -3.1 V 偏置电压下实现。电压响应度已达到7 × 10 ⁸ V/W。