31 October 2016 A calibration method for photon counters using a customized standard light source
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Photomultiplier tubes (PMTs) are the most common photoelectric conversion apparatus used as photon counters. Because of the sensitivity of the PMTs to the interference, calibration is necessary during the application of the PMTs. Traditional solutions for calibration are either based on the inverse square law of illumination, or using light-emitting diodes (LEDs) as standard light sources. However, rigid experimental techniques are required for these solutions. And the emission spectrum of LEDs does not cover the entire spectrum of detection. In this paper, a calibration method is presented by using a customized standard light source which can provide full spectrum of weak light from the dark count level to the saturation level of the PMTs. The photon counter in a light-shielding cavity is connected, via an optical fiber, to the customized standard light source attached with an intensity detector. The calibration process is discussed and experimental results with chemical reference substance are also presented for comparison.
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Shulang Lin, Shulang Lin, Huarong Gu, Huarong Gu, Qiaofeng Tan, Qiaofeng Tan, } "A calibration method for photon counters using a customized standard light source", Proc. SPIE 10019, Optoelectronic Devices and Integration VI, 100190T (31 October 2016); doi: 10.1117/12.2247864; https://doi.org/10.1117/12.2247864

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