Characterization of aqueous alcohol solutions in bottles with THz reflection spectroscopy
Characterization of aqueous alcohol solutions in bottles with THz reflection spectroscopy
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DOI：
10.1364/oe.16.009318
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发表时间：
2008-06-23
期刊：
影响因子：
3.8
通讯作者：
Moller, Uffe
中科院分区：
文献类型：
--
作者：
Jepsen, Peter Uhd;Jensen, Jens Kristian;Moller, Uffe
我们展示了一种基于自参考太赫兹时域光谱的方法，用于检测封闭容器内的水性液体，特别是酒精溶液。我们证明，它是可能的，以确定水溶液中的酒精含量，液体可以被分类为无害或易燃。该方法在反射模式下操作，结果是对THz辐射不透明的液体可以被表征，而瓶子形状的影响很小。该方法适用于塑料瓶以及玻璃瓶，塑料或玻璃对THz辐射的吸收是限制因素。反射模式允许自动控制测量的有效性。该方法可用于安检点的液体扫描系统。(C)2008年美国光学学会。
We demonstrate a method based on self-referenced THz time-domain spectroscopy for inspection of aqueous liquids, and in particular alcohol solutions, inside closed containers. We demonstrate that it is possible to determine the alcohol content of an aqueous solution, and that liquids can be classified as either harmless or inflammable. The method operates in reflection mode with the result that liquids opaque to THz radiation can be characterized with little influence of the bottle shape. The method works with plastic bottles as well as glass bottles, with absorption of THz radiation by the plastic or the glass being the limiting factor. The reflection mode allows for automatic control of the validity of the measurement. The method will be useful in liquid scanning systems at security checkpoints. (C) 2008 Optical Society of America.