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Proceedings Paper

Realization of the 250nm-400nm spectral irradiance scale
Author(s): Zhifeng Wu; Cai-hong Dai; Jia-Lin Yu; Bo Huang; Hui-quan Ou-Yang
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Paper Abstract

Spectral irradiance scale of 250nm-400nm has been realized with the temperature of blackbody traced back to the eutectic fixed-points blackbody. Since the ITS-90 can only be extended to 2473 K and spectral irradiance of 250 nm-400nm requests that the blackbody be operated around 3000 K. The temperature determination of blackbody is calculated using the ratio of spectra radiance at working temperature and a temperature no more than 2473 K. In the experiment, a pyrometer is calibrated by the Pt-C and Re-C eutectic fixed-points blackbody. Accordingly, the measuring scope of the pyrometer can be extends to 2747 K, which is more close to the working temperature. On the other hand, high temperature blackbody BB3500M is first used as the primary standard of spectral irradiance at the National Institute of Metrology (NIM).

Paper Details

Date Published: 30 November 2011
PDF: 8 pages
Proc. SPIE 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 82012B (30 November 2011); doi: 10.1117/12.907062
Show Author Affiliations
Zhifeng Wu, National Institute of Metrology (China)
Cai-hong Dai, National Institute of Metrology (China)
Jia-Lin Yu, National Institute of Metrology (China)
Bo Huang, National Institute of Metrology (China)
Hui-quan Ou-Yang, National Institute of Metrology (China)


Published in SPIE Proceedings Vol. 8201:
2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems
Xinyong Dong; Xiaoyi Bao; Perry Ping Shum; Tiegen Liu, Editor(s)

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