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A sensitive CW DFB quantum cascade laser based QEPAS sensor for detection of SO2

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Abstract

The development of a sensitive SO2 QEPAS-based sensor platform employing a CW DFB-QCL will be reported. A detection sensitivity of 100 ppbv was achieved with a 1-sec averaging time for the 1380.94 cm−1 SO2 line.

© 2012 Optical Society of America

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