TRIPLE Q : a three channel quantum cascade laser absorption spectrometer for fast multiple species concentration measurements

M. Hübner, S. Welzel, D. Marinov, O. Guaitella, S. Glitsch, A. Rousseau, J. Röpcke

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

22 Citaten (Scopus)
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Samenvatting

A compact and transportable three channel quantum cascade laser system (TRIPLE Q) based on mid-infrared absorption spectroscopy has been developed for time-resolved plasma diagnostics. The TRIPLE Q spectrometer encompasses three independently controlled quantum cascade lasers (QCLs), which can be used for chemical sensing, particularly for gas phase analysis of plasmas. All three QCLs are operated in the intra-pulse mode with typical pulse lengths of the order of 150 ns. Using a multiplexed detection, a time resolution shorter than 1 µs can be achieved. Hence, the spectrometer is well suited to study kinetic processes of multiple infrared active compounds in reactive plasmas. A special data processing and analysis technique has been established to account for time jitter effects of the infrared emission of the QCLs. The performance of the TRIPLE Q system has been validated in pulsed direct current plasmas containing N2O/air and NO2/air.
Originele taal-2Engels
Artikelnummer093102
Pagina's (van-tot)1-7
Aantal pagina's7
TijdschriftReview of Scientific Instruments
Volume82
DOI's
StatusGepubliceerd - 2011

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