Proceedings Article10.1117/12.2199705
Improved photon counting efficiency calibration using superconducting single photon detectors
Haiyong Gan,Nan Xu,Jianwei Li,Ruoduan Sun,Feng Guojin,Yanfei Wang,Chong Ma,Lin Yandong,Labao Zhang,Lin Kang,Jian Chen,Peiheng Wu +11 more
- 15 Oct 2015
- Vol. 9674, pp 449-457
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TL;DR: In this article, a superconducting nanowire single photon detector with advantages such as high photon counting speed (<20 MHz), low dark count rate (<50 counts per second), and wideband responsivity (UV to near infrared) is used as the trigger detector, enabling correlated photons calibration capabilities into shortwave visible range.
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Abstract: The quantum efficiency of photon counters can be measured with standard uncertainty below 1% level using correlated photon pairs generated through spontaneous parametric down-conversion process. Normally a laser in UV, blue or green wavelength range with sufficient photon energy is applied to produce energy and momentum conserved photon pairs in two channels with desired wavelengths for calibration. One channel is used as the heralding trigger, and the other is used for the calibration of the detector under test. A superconducting nanowire single photon detector with advantages such as high photon counting speed (<20 MHz), low dark count rate (<50 counts per second), and wideband responsivity (UV to near infrared) is used as the trigger detector, enabling correlated photons calibration capabilities into shortwave visible range. For a 355nm single longitudinal mode pump laser, when a superconducting nanowire single photon detector is used as the trigger detector at 1064nm and 1560nm in the near infrared range, the photon counting efficiency calibration capabilities can be realized at 532nm and 460nm. The quantum efficiency measurement on photon counters such as photomultiplier tubes and avalanche photodiodes can be then further extended in a wide wavelength range (e.g. 400-1000nm) using a flat spectral photon flux source to meet the calibration demands in cutting edge low light applications such as time resolved fluorescence and nonlinear optical spectroscopy, super resolution microscopy, deep space observation, and so on.
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Citations
A large, uniform, laser-based spectrally tunable irradiance field for optical sensors calibration
Yingwei He,Haiyong Gan,Gan Xu,Nan Xu,Houping Wu,Feng Guojin,Wende Liu,Xiangliang Liu,Weimin Wang,Yinuo Xu,Xufeng Jing,Yike Xiao,Changyu Shen,Junchao Zhang,Haifeng Meng,Limin Xiong,Yandong Lin +16 more
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TL;DR: In this article, a large, uniform, spectrally tunable irradiance field based on a Ti-Sapphire laser was built for 2D radiometric calibration, where two double-convex lenses were employed as a beam expander; second, a rotary diffuser was placed at the common focal point of the two lenses; third, the expanded optical beam was then delivered onto and through a micro lens array to form a highly uniform spectral irradiances field with a size of 30 mm by 30 mm.
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A fiber-based photodetector linearity measurement system from classic to single photon level
Yike Xiao,Yangting Fu,Nan Xu,Yingwei He,Xiangliang Liu,Wende Liu,Xufeng Jing,Changyu Shen,Haiyong Gan +8 more
- 12 Mar 2020
TL;DR: In this article, an optical fiber system that can measure weak optical power was proposed, which can measure the spectral transmission characteristics of materials when the spatial density of classical optical power (that is, the laser or attenuated light is a small spot, but the optical power hits a fixed position) is different from the spatial densities of weak optical powers.
Spectral photon irradiance and spectral photon radiance standards for the calibration of photon-counting imagers
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- 18 Dec 2019
TL;DR: In this paper, the spectral quantum efficiency of the photon counting detectors has been established with uncertainties of < 0.5%, traceable to both the classical absolute cryogenic radiometer and the calibration facility based on correlated photons, with the calibration using these two methods agreed within 0.3% @ 633 nm.
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