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Proceedings Paper

A high absorptance terahertz coating
Author(s): Yuqiang Deng; Qing Sun; Jing Yu; Jinghui Wang; Yandong Lin
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Paper Abstract

We report an easily fabricated, broadband and high-absorbance coating for terahertz absolute radiometry. The spectral property of this coating was characterized in THz region with a home-made terahertz time-domain spectrometer. The measured results showed an extremely low spectral reflectance ranging from 0.1 THz to 2.0 THz. We assembled a terahertz radiometer with this coating as absorber. This coating is highly absorptive both in terahertz region and in visible light; therefore, the power responsivity of this radiometer is easily traceable to Chinese National Laser Power Standard. This coating is useful in traceability of terahertz sources and detectors to the SI units, and it will play an important role in infrared and far infrared absolute radiometry.

Paper Details

Date Published: 22 June 2013
PDF: 6 pages
Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87692J (22 June 2013); doi: 10.1117/12.2021046
Show Author Affiliations
Yuqiang Deng, National Institute of Metrology (China)
Qing Sun, National Institute of Metrology (China)
Jing Yu, National Institute of Metrology (China)
Jinghui Wang, National Institute of Metrology (China)
Yandong Lin, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 8769:
International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013)
Chenggen Quan; Kemao Qian; Anand Asundi, Editor(s)

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