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Advanced optoacoustic sensor designs for environmental applications

We will report on the design and realization of optoacoustic sensors based on commercial quantum cascade lasers for environmental analysis applications. Different configurations will be described: i) sensors based on resonant photoacoustic cells, a "standard" H cell and an innovative T-cell; ii) sensor based on quartz enhanced photoacoustic spectroscopy. We will analyze the results obtained in the detection of nitric oxide.