Molecular dispersion spectroscopy--new capabilities in laser chemical sensing.

Molecular dispersion spectroscopy--new capabilities in laser chemical sensing.
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DOI:
10.1111/j.1749-6632.2012.06660.x
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发表时间:
2012-07
影响因子:
5.2
通讯作者:
Wysocki G
Wysocki G
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Nikodem M;Wysocki G

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适用于分子色散传感的激光光谱技术使化学检测中的新应用和策略成为可能。本文讨论了目前的国家的最先进的,并提供了一个概述最近开发的啁啾激光色散光谱(CLADS)为基础的技术。CLaDS及其衍生物允许对微量气体进行定量光谱分析,并实现新的功能,例如扩展浓度测量的动态范围、对光检测强度波动的高免疫力或在光学域中直接处理光谱信号的能力。几个实验配置的基础上的量子级联激光器和分子光谱数据的例子,以证明在中红外光谱区的分子色散光谱的能力。
Laser spectroscopic techniques suitable for molecular dispersion sensing enable new applications and strategies in chemical detection. This paper discusses the current state-of-the art and provides an overview of recently developed chirped laser dispersion spectroscopy (CLaDS) based techniques. CLaDS and its derivatives allow for quantitative spectroscopy of trace-gases and enable new capabilities such as extended dynamic range of concentration measurements, high immunity to photodetected intensity fluctuations, or capability of direct processing of spectroscopic signals in optical domain. Several experimental configurations based on quantum cascade lasers and examples of molecular spectroscopic data are presented to demonstrate capabilities of molecular dispersion spectroscopy in the mid-infrared spectral region.
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