Measurements of Low Optical Power with Cryostat-Based Predictable Quantum Efficient Detector at Liquid Nitrogen Temperature
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A4 Artikkeli konferenssijulkaisussa
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Date
2024
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en
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Journal of Physics: Conference Series, Volume 2864, issue 1
Abstract
We have validated optical power measurements with a Predictable Quantum Efficient Detector (PQED) at liquid nitrogen temperature (77 K) at low optical power from 130 fW to 3.3 pW. Two laser wavelengths at 514 nm and 785 nm were used. The lowest measured optical power corresponds to a photon flux of 0.5·106 photons per second (785 nm). The PQED’s responsivity is linear within the relative measurement uncertainties of 8% at 0.5·106 ph/s and 1.4% at 10·106 ph/s (95% confidence level), which enables the calibration of other low photon flux detectors directly against a primary standard of optical power.Description
Publisher Copyright: © 2024 Institute of Physics Publishing. All rights reserved.
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Korpusenko, M, Sildoja, M M, Manoocheri, F & Ikonen, E 2024, ' Measurements of Low Optical Power with Cryostat-Based Predictable Quantum Efficient Detector at Liquid Nitrogen Temperature ', Journal of Physics: Conference Series, vol. 2864, no. 1, 012005 . https://doi.org/10.1088/1742-6596/2864/1/012005