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Armin Lambrecht, Thomas Beyer, Marcus Braun, Andreas Peter, Susanne Hartwig

Fast Gas Spectroscopy with Pulsed Quantum Cascade Lasers for Air Quality Measurement

Quantum Cascade Lasers (QCL) are novel laser sources in the mid infrared (MIR, 3–30μm) spectral region. Using QCL compact and highly sensitive laser spectroscopy systems without cryogenic cooling are feasible. With pulsed lasers measurement rates in the 10–100 kHz range are possible. For the gases CO₂, NO, and NH₃ sensitivity limits below 1 ppm·m are obtained. The method is suitable for open path measurements with simultaneous determination of the actual pathlength.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 71, 05/2004
Pages: 311 - 318

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