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Optical Engineering

Spectral emissivity and transmissivity measurement for zinc sulphide infrared window based on integrating-sphere reflectometry
Author(s): Yu-Feng Zhang; Jing-Min Dai; Lei Zhang; Wei-Dong Pan
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Paper 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 ).

Paper Details

Date Published: 16 August 2013
PDF: 6 pages
Opt. Eng. 52(8) 087107 doi: 10.1117/1.OE.52.8.087107
Published in: Optical Engineering Volume 52, Issue 8
Show Author Affiliations
Yu-Feng Zhang, Harbin Institute of Technology (China)
Jing-Min Dai, Harbin Institute of Technology (China)
Lei Zhang, Harbin Institute of Technology (China)
Wei-Dong Pan, Harbin Institute of Technology (China)

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