The development of the advanced cryogenic radiometer facility at NRC

Gamouras, Angela; Todd, A. D. W.; Côté, Éric; Rowell, N. L.

doi:10.1088/1742-6596/972/1/012014

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…Now, NRC has a facility equipped with a high temperature blackbody (HTBB) that is implemented as a primary standard radiometric light source in spectral irradiance measurements. The thermodynamic temperature of the HTBB is determined using a wide-band filter radiometer [4], which has a spectral responsivity calibration SI-traceable to the NRC optical power scale through the NRC absolute cryogenic radiometer IOP Publishing doi:10.1088/1742-6596/2149/1/012005 2 [5,6], giving a source and detector-based spectral irradiance scale realization (Figure 1). The design of the NRC spectral irradiance facility, measurement procedure, and uncertainty analysis are presented.…”

Section: Introductionmentioning

confidence: 99%

Advancements in NRC’s Primary Spectral Irradiance Scale Realization

Gamouras

Woods

Côté

et al. 2022

J. Phys.: Conf. Ser.

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The National Research Council (NRC) of Canada has been working to establish new facilities and to improve measurement capabilities traceable to the International System of Units (SI units) in optical radiometry. The NRC primary spectral irradiance scale has transitioned from a detector-based approach in the range of 700 nm to 1600 nm to a detector and source-based realization from 250 nm to 2500 nm. A high temperature blackbody (HTBB) acts as the primary light source for the calibration of 1000 W FEL spectral irradiance standard lamps. The thermodynamic temperature of the HTBB is determined using an NRC-designed wide-band filter radiometer, with spectral responsivity SI-traceable to the NRC optical power scale. This new facility has significantly improved measurement uncertainties compared to the previous NRC spectral irradiance scale.

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Section: Introductionmentioning

confidence: 99%

Advancements in NRC’s Primary Spectral Irradiance Scale Realization

Gamouras

Woods

Côté

et al. 2022

J. Phys.: Conf. Ser.

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“…Monochromator-based ACRs have been developed for absolute realization of the SR scale in a wide, fully-covered spectral range [16][17][18][19][20]. The SR scale can be established in the MIR range but with relatively larger uncertainty due to very limited amount of spectral optical radiant power from traditional thermal radiation sources [18].…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared spectral responsivity scale based on an absolute cryogenic radiometer and a tunable quantum cascade laser

Liu¹,

Xu²,

He³

et al. 2021

Metrologia

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The spectral optical radiant power of a quantum cascade laser (QCL) in the (7.35–10.6) µm spectral range has been measured using a Y-shape absolute cryogenic radiometer (ACR). The spectral responsivity (SR) of a transfer detector based on an integrating-sphere-coupled mercury-cadmium-telluride (IS-MCT) photoconductive detector has been calibrated. The optical radiant power of the QCL can be adjusted and stabilized in the range of (0.035–0.6) mW. The relative uncertainty of the ACR-based optical radiant power measurement was evaluated to be 0.023%–0.04% (k = 1). The relative uncertainty of the SR calibration of the IS-MCT transfer detector was analyzed to be 0.097%–0.16% (k = 1). The spectral range for the SR calibration can be extended to cover (3–12) µm using commercially available QCLs.

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Absolute Primary Radiometric Thermometry

Sapritsky

Prokhorov²

2020

Blackbody Radiometry

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The development of the advanced cryogenic radiometer facility at NRC

Cited by 8 publications

References 3 publications

Advancements in NRC’s Primary Spectral Irradiance Scale Realization

Advancements in NRC’s Primary Spectral Irradiance Scale Realization

Mid-infrared spectral responsivity scale based on an absolute cryogenic radiometer and a tunable quantum cascade laser

Absolute Primary Radiometric Thermometry

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