Spectral Irradiance Measurements Based on Detector

7th Brazilian Congress on Metrology

Lima, M.S.^1 ; Menegotto, T.^1 ; Duarte, I.^1 ; Ferreira Da Silva, T.^1 ; Alves, L.C.^1 ; Alvarenga, A.D.^1 ; Almeida, G.B.^1 ; Teixeira, R.N.^2 ; Couceiro, I.B.^1

Optical Metrology Division, National Institute of Metrology Quality and Technology-INMETRO, Av. N. S. das Graças 50, Duque de Caxias, Xerém RJ

25250-020, Brazil^1

Thermal Metrology Division, National Institute of Metrology Quality and Technology-INMETRO, Av. N. S. das Graças, 50, Duque de Caxias Xerém, RJ

25250020, Brazil^2

关键词: Filter radiometers;    Infrared regions;    Interference filters;    Secondary standard;    Shunt resistances;    Spatial uniformity;    Spectral irradiance;    Spectral irradiance measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/575/1/012023/pdf
DOI  :  10.1088/1742-6596/575/1/012023

来源: IOP

【 摘 要 】

This paper presents the preliminary results of the realization of absolute spectral irradiance scale at INMETRO in the ultraviolet, visible and infrared regions using filter radiometers as secondary standards. In the construction of these instruments are used, at least, apertures, interference filters and a trap detector. In the assembly of the trap detectors it was necessary to characterize several photocells in spatial uniformity and shunt resistance. All components were calibrated and these results were analyzed to mount the filter radiometer.