Realization of the 250nm-400nm spectral irradiance scale

Zhifeng Wu; Cai-hong Dai; Jia-Lin Yu; Bo Huang; Hui-quan Ou-Yang

doi:10.1117/12.907062

30 November 2011 Realization of the 250nm-400nm spectral irradiance scale

Zhifeng Wu, Cai-hong Dai, Jia-Lin Yu, Bo Huang, Hui-quan Ou-Yang

Proceedings Volume 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 82012B (2011) https://doi.org/10.1117/12.907062
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

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).

Citation Download Citation

Zhifeng Wu, Cai-hong Dai, Jia-Lin Yu, Bo Huang, and Hui-quan Ou-Yang "Realization of the 250nm-400nm spectral irradiance scale", Proc. SPIE 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 82012B (30 November 2011); https://doi.org/10.1117/12.907062

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