Intracavity laser absorption spectroscopy using mid-IR quantum cascade laser
Intracavity laser absorption spectroscopy using mid-IR quantum cascade laser
复制标题
使用中红外量子级联激光器的腔内激光吸收光谱
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
O. Edwards
中科院分区：
文献类型：
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作者：
G. Medhi;A. Muravjov;H. Saxena;C. Fredricksen;T. Brusentsova;R. Peale;O. Edwards
IR波长的腔内激光吸收光谱（ICLAS）提供了一种具有足够灵敏度的光谱感测的机会，以检测低蒸气压化合物（如爆炸物）的蒸气。这里报道的是这种方法的关键使能技术，包括多模外腔量子级联激光器和扫描法布里-珀罗光谱仪，以分析存在分子腔内吸收体的激光模式光谱。报告还设计了一个紧凑的集成数据采集和控制系统。应用包括军事和商业传感的威胁化合物，化学气体，生物气溶胶，药物，禁止或入侵的植物或动物，生物医学呼吸分析，和地球或行星大气科学。
Intracavity Laser Absorption Spectroscopy (ICLAS) at IR wavelengths offers an opportunity for spectral sensing with sufficient sensitivity to detect vapors of low vapor pressure compounds such as explosives. Reported here are key enabling technologies for this approach, including multi-mode external-cavity quantum cascade lasers and a scanning Fabry-Perot spectrometer to analyze the laser mode spectrum in the presence of a molecular intracavity absorber. Reported also is the design of a compact integrated data acquisition and control system. Applications include military and commercial sensing for threat compounds, chemical gases, biological aerosols, drugs, and banned or invasive plants or animals, bio-medical breath analysis, and terrestrial or planetary atmosphere science.