THz time-domain spectroscopy of atmosphere with different humidity

被引：34

作者：

Yuan, T ^{[1
]}

Liu, HB ^{[1
]}

Xu, JZ ^{[1
]}

Al-Douseri, F ^{[1
]}

Hu, Y ^{[1
]}

Zhan, XC ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Ctr Terahertz Res, Troy, NY 12180 USA

来源：

TERAHERTZ FOR MILITARY AND SECURITY APPLICATIONS | 2003年 / 5070卷

关键词：

THz time-domain spectroscopy; water vapor; relative humidity;

D O I：

10.1117/12.504295

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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.

引用

页码：28 / 37

页数：10

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