CALIBRATION OF SPECTRORADIOMETERS USING TUNABLE LASERS

Published

April 22, 2021

Author(s)

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

Abstract

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

Pub Type

Conferences

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Keywords

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

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=928010 (Accessed October 17, 2025)