简要介绍了雪崩光电二极管(APD)阵列光子计数成像原理，建立了基于泊松点过程的APD阵列的单光子响应模型。

A photon counting image model based on avalanche photodiode (APD) arrays response characters and Poisson point process of photons was developed.

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本文着重介绍了半导体雪崩光电二极管(APD)的研究现状和应用，以及一种新型的单光子探测器—真空雪崩光电二极管(VAPD)的结构，原理和特性。

A overview of the basic structure, operating principle and properties for a new single-photon photo-detector, called vacuum avalanche photodiode (VAPD), is presented too.

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