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Photoacoustic gas sensing with a commercial external cavity-quantum cascade laser at 10.5 μm |
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| Institution: | 1. Groupe de Spectrométrie Moléculaire et Atmosphérique (GSMA), CNRS – UMR 7331, Université de Reims Champagne-Ardenne, UFR Sciences Exactes et Naturelles, Moulin de la Housse, BP 1039, F-51687 Reims Cedex 2, France;2. Aerovia, GSMA UFR Sciences Exactes et Naturelles, Moulin de la Housse, BP 1039, F-51687 Reims Cedex 2, France;1. College of Environment and Ecology, Jiangsu Open University, Nanjing, 210017, China;2. The State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science Chinese Academy of Sciences, Nanjing, 210008, China;3. College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China |
| Abstract: | We report the implementation of a commercial external cavity-quantum cascade laser emitting at 10.5 μm in a photoacoustic spectrometer. This spectrometer enables measurements on broad spectral range up to 60 cm−1 which means that spectra of complex molecules can be recorded as well as a whole absorption band of a small molecule. The wide tuning range of the source of this photoacoustic spectrometer demonstrates the possibility to detect small and complex molecules such as carbon dioxide and butane. |
| Keywords: | External cavity-quantum cascade laser Photoacoustic spectrometry Carbon dioxide Butane |
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