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Gigacount/Second Photon Detection Module Based on an Single-Photon Avalanche Diode Array

机译:基于单光子雪崩二极管阵列的千兆/第二光子检测模块

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In this letter, we present a compact photon detection module, based on an array of single-photon avalanche diodes. The use of a dedicated silicon technology for the fabrication of the sensors allows us to combine large active areas (50- diameter), high photon detection efficiency (49% at 550-nm wavelength), and low dark count rate. Because of a fully parallel architecture, the module provides voltage pulses synchronous to each photon detection for a maximum global count rate exceeding 1 Gcps. These properties make the system suitable for operation in two different free-running modes. The first, suitable to acquire faint signals, allows multi-spot acquisitions and can be used to considerably reduce the measurement time in applications, such as single-molecule analysis. With the second, it is possible to use all the pixels in a combined mode, to extend and move the dynamic range of the module to very high count rates and to attain number resolving capabilities.
机译:在这封信中,我们介绍了一个基于单光子雪崩二极管阵列的紧凑型光子检测模块。使用专用的硅技术来制造传感器,使我们能够结合大的有效区域(50直径),高的光子检测效率(在550 nm波长下为49%)和低暗计数率。由于具有完全并行的架构,该模块可提供与每个光子检测同步的电压脉冲,最大全局计数率超过1 Gcps。这些属性使系统适合在两种不同的自由运行模式下运行。第一种适合于采集微弱的信号,可以进行多点采集,并且可以用来大大减少诸如单分子分析等应用中的测量时间。使用第二个像素,可以以组合模式使用所有像素,以将模块的动态范围扩展和移动到非常高的计数率,并获得数字解析功能。

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