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Proceedings Paper

Terahertz time-domain spectroscopy of atmosphere with different humidity
Author(s): Tao Yuan; Haibo Liu; Jingzhou Xu; Fatemeh Al-Douseri; Ying Hu; Xi-Cheng Zhang
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Paper Abstract

Water, at both the liquid and gas phase, maintains a high absorption coefficient in the terahertz (THz) frequency range. As a result, a major limitation of THz time-domain spectroscopy (THz-TDS) for real-world applications is water attenuation. The humidity in the atmosphere affects THz waves (T-ray) for long distance measurement and tracing materials, such as explosive materials. We measure air at various humidity and we report how humidity affects THz-TDS measurement. We also report the changes to spectrum amplitudes by measuring water vapor absorption in a vacuum chamber.

Paper Details

Date Published: 29 July 2003
PDF: 10 pages
Proc. SPIE 5070, Terahertz for Military and Security Applications, (29 July 2003); doi: 10.1117/12.504295
Show Author Affiliations
Tao Yuan, Rensselaer Polytechnic Institute (United States)
Haibo Liu, Rensselaer Polytechnic Institute (United States)
Jingzhou Xu, Rensselaer Polytechnic Institute (United States)
Fatemeh Al-Douseri, Rensselaer Polytechnic Institute (United States)
Ying Hu, Rensselaer Polytechnic Institute (United States)
Xi-Cheng Zhang, Rensselaer Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 5070:
Terahertz for Military and Security Applications
R. Jennifer Hwu; Dwight L. Woolard, Editor(s)

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