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Multi-species Trace Gas Analysis with Dual-wavelength DFB-QCLs

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Abstract

We evaluate two designs of dual-wavelength DFB-QCLs for high-resolution multi-species laser absorption spectrometers. Several room-temperature dual-wavelength QCLs were combined to measure concentrations of the most important pollutants and greenhouse gases in a compact laser spectrometer with state-of-the-art precision.

© 2017 Optical Society of America

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