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Yuqin Zong, Ping-Shine Shaw, Joseph Rice, C Cameron Miller


To shorten the long calibration chain when using the conventional source-based approach and therefore to reduce spectroradiometer's calibration uncertainty, we developed a detector-based approach to calibrate spectroradiometers directly against a transfer trap detector using a tunable laser. Two different detector-based methods are used for the calibration and their calibration results are in very good agreement with each other. The calibration result is also compared with that obtained using a working standard FEL lamp and the agreement is within the expanded uncertainties (k=2) of the working standard FEL lamp. This detector-based approach enables new, independent realizations of spectral irradiance or radiance scales on spectroradiometers. Such spectroradiometers can be used as instrument-based primary or transfer standards to disseminate spectral irradiance or radiance scale with a smaller uncertainty.
Proceedings Title
Proceeding of the 29th Quadrennial Session of the CIE
Conference Dates
June 14-22, 2019
Conference Location
Washington, DC
Conference Title
The 29th Quadrennial Session of the CIE


Detector-based Calibration, New Method, Spectroradiometer, Tunable Laser


Zong, Y. , Shaw, P. , Rice, J. and Miller, C. (2021), CALIBRATION OF SPECTRORADIOMETERS USING TUNABLE LASERS, Proceeding of the 29th Quadrennial Session of the CIE, Washington, DC, [online], (Accessed May 27, 2024)


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Created April 22, 2021