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Monitoring of nitrous acid (HONO) by off-beam quartzenhanced photoacoustic spectroscopy (QEPAS) using external-cavity quantum cascade laser

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Abstract

Spectroscopic monitoring of short-lived gaseous nitrous acid (HONO) near 8 µm was realized by off-beam coupled quartz-enhanced photoacoustic spectroscopy (QEPAS) using an external cavity quantum cascade lasers with an ultra-short residence time for air sampling.

© 2016 Optical Society of America

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