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B. Lendl et al.:
"Mid-IR Quantum Cascade Lasers: A promising light source for use in analytical chemistry";
Hauptvortrag: Analytica 2014, München (eingeladen); 01.04.2014 - 04.04.2014.

The special properties of mid-IR quantum cascade lasers (QCLs) render them most attractive for use in a variety of different applications in analytical chemistry. This presentation will first report on experimental results obtained by step-scan FTIR spectroscopy concerning the emission properties of external cavity QCL, distributed feedback (DFB) QCLs and surface emitting ring QCLs.
In the second part the advantageous use of these lasers for different applications will be reported. These applications include the simultaneous measurement of 9 parameters in human serum and plasma, as well gas trace gas detection. In the latter application results on quartz enhanced photoacoustic spectroscopy for the measurement of SO2 in the sub-ppm range as well as open path monitoring of NO and NO2 also in the low and sub-ppm range will be reported. Finally the concept of near-field mid-IR imaging using a combination of atomic force microscopy and pulsed EC-QCL lasers will be introduced.