Gas recognition with terahertz time-domain spectroscopy and spectral catalog: a preliminary study
Gas recognition with terahertz time-domain spectroscopy and spectral catalog: a preliminary study
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太赫兹时域光谱和光谱目录的气体识别：初步研究
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
D. Abbott
中科院分区：
文献类型：
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作者：
Hungyen Lin;W. Withayachumnankul;B. Fischer;S. P. Mickan;D. Abbott
在特定环境条件下检测和测量各种气体的能力在许多领域具有重大的潜在影响;从工业领域的危险气体检测到学术界的物理科学。微波和红外光谱法长期以来一直受到气体传感的关注。由于太赫兹（T射线）范围内发生的许多分子共振导致简单，独特的光谱特征，太赫兹时域光谱（TDS）有望成为气体检测的潜在工具。本文对太赫兹时域光谱的实时气体识别进行了初步研究。特别是，提出了一种简单的方法，该方法涉及在没有参考脉冲的情况下从气体物质中提取谱线位置，并使用亚毫米波、毫米波和微波谱线目录通过最小欧几里得距离对其进行分类。
The ability to detect and measure a variety of gases under certain environmental conditions has significant potential impact in many areas; from hazardous gas detection in the industrial domain to physical sciences in academia. Gas sensing has long received attention with microwave and infrared spectroscopy. With many molecular resonances occurring in the THz (T-ray) range leading to simple, unique spectral features, THz time-domain spectroscopy (TDS) promises to be a potential tool for gas detection. This paper presents a preliminary study on real-time gas recognition with THz-TDS. In particular, a simple method is proposed that involves extracting line positions from gas species without a reference pulse and classifying them by means of the minimum Euclidean distance using the Submillimeter, Millimeter, and Microwave Spectral Line Catalog.