Terahertz time-domain spectroscopy of atmosphere with different humidity

Tao Yuan; Haibo Liu; Jingzhou Xu; Fatemeh Al-Douseri; Ying Hu; Xi-Cheng Zhang

doi:10.1117/12.504295

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29 July 2003 Terahertz time-domain spectroscopy of atmosphere with different humidity

Tao Yuan, Haibo Liu, Jingzhou Xu, Fatemeh Al-Douseri, Ying Hu, Xi-Cheng Zhang

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Proceedings Volume 5070, Terahertz for Military and Security Applications; (2003) https://doi.org/10.1117/12.504295
Event: AeroSense 2003, 2003, Orlando, Florida, United States

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.

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Tao Yuan, Haibo Liu, Jingzhou Xu, Fatemeh Al-Douseri, Ying Hu, and Xi-Cheng Zhang "Terahertz time-domain spectroscopy of atmosphere with different humidity", Proc. SPIE 5070, Terahertz for Military and Security Applications, (29 July 2003); https://doi.org/10.1117/12.504295

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