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Sulfur Dioxide Detection Using CW-DFB-QCL Based Quartz-Enhanced Photoacoustic Spectroscopy

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Abstract

The development of a sensitive SO2 QEPAS based sensor platform employing a 140 mW CW-DFB-QCL will be reported. A detection limit of 75 ppbv (3σ) was achieved with a 1-sec averaging time for the 1380.94 cm−1 SO2 absorption line.

© 2013 Optical Society of America

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