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Airborne carbon monoxide (CO) measurements based on Quantum cascade Laser infrared Absorption Spectroscopy (QLAS) were performed on the German High-Altitude Long-range Observatory (HALO) aircraft during test flights in January 2015. Here we investigate the in-flight stability of TRISTAR (TRacer In-Situ Tdlas for Atmospheric Research), a multilaser QLAS instrument for the detection of tropospheric...
A compact mid-infrared laser spectrometer based-on a thermoelectrically (TE) cooled continuous-wave room temperature (RT) quantum cascade laser working at a wavelength of 4.566 µm and TE-cooled detectors has been newly developed to demonstrate the applicability of high precision measurements of atmospheric CO. Wavelength modulation spectroscopy technique combined with a multiple pass absorption cell...
The application of wavelet transform-based digital filter to quantum cascade laser spectroscopy was investigated by its application to simulated spectra and experimental results obtained with our novel and compact QCL spectrometer, which offers the potential for high sensitive and selective measurements of trace gas concentration at high temporal resolution (less than 1 s) for species of interest...
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