Open AccessA method for spectral irradiance measurement based on a large area WC-C fixed point blackbody
Author(s) -
Yanfei Wang,
Caihong Dai,
B. B. Khlevnoy,
Irina Grigoryeva,
Ling Li,
Zhifeng Wu,
Yihang Xie,
Shaoming He
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.401626
Subject(s) - black body radiation , irradiance , optics , wavelength , solar irradiance , measurement uncertainty , materials science , physics , radiation , meteorology , quantum mechanics
We have proposed a novel method for the spectral irradiance measurement of the standard lamp. The measurement has been realized by using national primary scale based on a large area WC-C fixed point blackbody for the first time. The wavelength range is from 450 nm to 1000 nm. The spectral irradiance of the standard lamp has been measured based on the traditional variable temperature blackbody and large area WC-C fixed point blackbody. The results of the two methods agree within the uncertainties. Compared with the traditional measurement method, the fixed point method can reduce the major component of the spectral irradiance measurement uncertainty related to the temperature measurement.