Abstract
We report the implementation of a commercial external cavity-quantum cascade laser emitting at 10.5μm in a photoacoustic spectrometer. This spectrometer enables measurements on broad spectral range up to 60cm−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.
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