Spectral emissivity and transmissivity measurement for zinc sulphide infrared window based on integrating-sphere reflectometry

Yu-Feng Zhang; Jing-Min Dai; Lei Zhang; Wei-Dong Pan

doi:10.1117/1.OE.52.8.087107

16 August 2013 Spectral emissivity and transmissivity measurement for zinc sulphide infrared window based on integrating-sphere reflectometry

Yu-Feng Zhang, Jing-Min Dai, Lei Zhang, Wei-Dong Pan

Author Affiliations +

Funded by: National Natural Science Foundation of China

Optical Engineering, Vol. 52, Issue 8, 087107 (August 2013). https://doi.org/10.1117/1.OE.52.8.087107

Abstract

The spectral emissivity and transmissivity of zinc sulphide (ZnS) infrared windows in the spectral region from 2 to 12 μm and temperature range from 20 to 700°C is measured by a facility built at the Harbin Institute of Technology (HIT). The facility is based on the integrating-sphere reflectometry. Measurements have been performed on two samples made of ZnS. The results measured at 20°C are in good agreement with those obtained by the method of radiant energy comparison using a Fourier transform infrared spectrometer. Emissivity measurements performed with this facility present an uncertainty of 5.5% (cover factor=2 ).

Citation Download Citation

Yu-Feng Zhang, Jing-Min Dai, Lei Zhang, and Wei-Dong Pan "Spectral emissivity and transmissivity measurement for zinc sulphide infrared window based on integrating-sphere reflectometry," Optical Engineering 52(8), 087107 (16 August 2013). https://doi.org/10.1117/1.OE.52.8.087107

Published: 16 August 2013

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