Intercomparison of a correlated-photon-based method to measure detector quantum efficiency.
Intercomparison of a correlated-photon-based method to measure detector quantum efficiency.
复制标题
用于测量探测器量子效率的基于相关光子的方法的相互比较。
DOI：
10.1364/ao.41.002914
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发表时间：
2002
期刊：
影响因子：
1.9
通讯作者：
M. Rastello
中科院分区：
文献类型：
--
作者：
A. Migdall;S. Castelletto;I. Degiovanni;M. Rastello
我们报道了利用相关光子源对光电探测器量子效率的绝对校准，这两个实验室分别由国家标准与技术研究所和国家电子技术研究所(Ien)独立执行。其目的是使用实验室间的比较，通过展示光子关联技术独立于特定的实验设置来证明其内在的绝对性。我们发现，探测器的不一致性限制了这种比较，而不是方法本身固有的不确定性。这些调查的最终目标是开发一种健壮的测量方案，允许通过实验确定单个测量的不确定度并在操作中进行验证。此外，为了说明该方法的通用性，还使用IEN测量装置对光纤耦合雪崩光电二极管模块进行了校准。对有光纤耦合和无光纤耦合两种情况下探测器的不确定度进行了评估，并讨论了不同之处。目前使用更薄和更高透过率的非线性晶体来产生关联光子的IEN设置显示，相对于先前由IEN[Metrologia 32,501-503(1996)]报道的结果，总体精度有了显著的提高。
We report on the absolute calibration of photodetector quantum efficiency by using correlated photon sources, performed independently at two laboratories, the National Institute of Standards and Technology and the Istituto Elettrotecnico Nazionale (IEN). The goal is to use an interlaboratory comparison to demonstrate the inherent absoluteness of the photon correlation technique by showing its independence from the particular experimental setup. We find that detector nonuniformity limited this comparison rather than uncertainty inherent in the method itself. The ultimate goal of these investigations is development of a robust measurement protocol that allows the uncertainties of individual measurements to be determined experimentally and verified operationally. Furthermore, to demonstrate the generality of the procedure, the IEN measurement setup was also used to calibrate a fiber-coupled avalanche photodiode module. Uncertainties are evaluated for the detector both with and without fiber coupling and differences are discussed. The current IEN setup using a thinner and higher transmittance nonlinear crystal for the generation of correlated photons shows a significant improvement in overall accuracy with respect to previously reported results from IEN [Metrologia 32, 501-503 (1996)].