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Kvantovaya Elektronika, 2020, Volume 50, Number 2, Pages 197–200 (Mi qe17189)  

Laser applications and other topics in quantum electronics

2D microspatial distribution uniformity of photon detection efficiency and crosstalk probability of multi-pixel photon counters

Lina Liua, Chunling Zhangb, Giacomo Gallinac, Guoqing Zhangd*

a School of Science, Xi'an University of Technology, China
b School of Science, Xi'an University of Architecture and Technology, China
c TRIUMF, Vancouver, Canada
d School of Science, Xi'an Polytechnic University, China

Abstract: Two-dimensional (2D) microspatial distribution uniformity of photon detection efficiency (PDE) and optical crosstalk probability Pct of multi-pixel photon counters (MPPCs) is studied. The experimental results show that the 2D spatial distribution of Pct is obviously uneven, i.e. Pct is larger at the corners and edges of a single pixel in MPPCs, which suggest a higher electrical field in the depletion region of the pixel at the corners and edges. The nonuniformity of the 2D spatial distribution of PDE also become evident when the size of the pixels of MPPCs is small, which signifies higher nonuniformity of the electric field distribution in MPPCs with small pixel size. A method is proposed for characterization of the 2D electrical field spatial distribution uniformity in a single pixel of MPPCs, which can be used for guiding the optimisation of the fabrication process of MPPCs and their properties. This promising method can naturally be extended to any Geiger avalanche photodiodes (G-APDs) and their arrays.

Keywords: multi-pixel photon counter, silicon photomultiplier, spatial distribution uniformity, photon detection efficiency, optical crosstalk probability, microspatial scale.

Funding Agency Grant Number
National Natural Science Foundation of China 11975176
11705136
Natural Science Basic Research Plan in Shaanxi Province 2019JM-139
Shaanxi Province Department of Education Special Scientific Research Project 15JK1443
Shaanxi Province Natural Science Foundation of China 2018JQ1079

* Author to whom correspondence should be addressed

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English version:
Quantum Electronics, 2020, 50:2, 197–200

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Received: 25.09.2019

Citation: Lina Liu, Chunling Zhang, Giacomo Gallina, Guoqing Zhang, “2D microspatial distribution uniformity of photon detection efficiency and crosstalk probability of multi-pixel photon counters”, Kvantovaya Elektronika, 50:2 (2020), 197–200 [Quantum Electron., 50:2 (2020), 197–200]

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  • Квантовая электроника Quantum Electronics
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