Characterization of predictable quantum efficient detector in terms of optical non-linearity in the visible to near-infrared range
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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6
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Metrologia, Volume 58, issue 5
Abstract
The characteristics of a predictable quantum efficient detector (PQED) in terms of optical non-linearity in the visible to near-infrared range were investigated under zero-bias and reverse-bias voltage conditions. In the zero-bias condition, linear behavior was observed in the wavelength from 405 nm to 1060 nm in the photocurrent range of 1 nA to 10 mu A, and saturation occurred for photocurrents over 10 mu A for all wavelengths. In the reverse-bias voltage of 10 V, the linear behavior was observed in the photocurrent range of 64 nA to 1 mA except for the wavelength of 1060 nm, and the saturation photocurrent increased up to 1 mA. The supralinearity value at 1060 nm increased sharply from the photocurrent of 100 mu A, and its maximum value reached up to 0.34% at the photocurrent of 1 mA because of the back surface recombination and the longer absorption length. The spectral linearity results of the PQED help us to understand the charge-carrier loss mechanism in the PQED, and would lead to more accurate optical measurement with it.Description
Publisher Copyright: © 2021 BIPM & IOP Publishing Ltd.
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Tanabe, M, Shitomi, H, Dönsberg, T & Ikonen, E 2021, 'Characterization of predictable quantum efficient detector in terms of optical non-linearity in the visible to near-infrared range', Metrologia, vol. 58, no. 5, 055012. https://doi.org/10.1088/1681-7575/ac1e35