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Nonlinearity Measurement of Si Transferring Photodetector in the Low Radiation Flux Range

Authors :
Yue Li
Zhen Liu
Yinlin Yuan
Wenchao Zhai
Peng Zou
Xiaobing Zheng
Source :
Photonics, Vol 10, Iss 9, p 1015 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

In order to establish a transferring chain from a photon flux of a single-photon source in quantum radiometry, the nonlinearity of the photodetector needs to be accurately measured. Using the flux superposition method, a nonlinearity measurement setup has been designed. The measurement setup consists of two tungsten halogen lamps, parent–child integrating spheres, an adjustable aperture, a diaphragm tube, and an optical filter. It has the advantage of low polarization error, low interference error, and low stray light effect. The Si photodiode to be measured is cooled to −40 °C to obtain a low noise level for low-flux radiation measurement. The nonlinearity of the Si photodetector is measured for photocurrent ranges from 10−12 A~10−6 A level, with a relative standard uncertainty from 0.0092~0.023%. The relative standard uncertainty of the nonlinearity correction factor ranged from 0.023~0.049%.

Details

Language :
English
ISSN :
23046732
Volume :
10
Issue :
9
Database :
Directory of Open Access Journals
Journal :
Photonics
Publication Type :
Academic Journal
Accession number :
edsdoj.b4d8374e41fb4a48a5f9346285616c81
Document Type :
article
Full Text :
https://doi.org/10.3390/photonics10091015