Multi-mode absorption spectroscopy using a quantum cascade laser for simultaneous detection of NO and H2O

Multi-mode absorption spectroscopy using a quantum cascade laser for simultaneous detection of NO and H2O

Detection of multiple transitions in NO and H 2 O using multi-mode absorption spectroscopy, MUMAS, with a quantum cascade laser, QCL, operating at 5.3 μm at scan rates up to 10 kHz is reported. The linewidth of longitudinal modes of the QCL is derived from pressure-dependent fits to experimental MUM...

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Veröffentlicht in:Applied physics. B, Lasers and optics Lasers and optics, 2016-08, Vol.122 (8), p.1-10, Article 226
Hauptverfasser: O’Hagan, S., Pinto, T., Ewart, P., Ritchie, G. A. D.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption spectroscopy
Applied physics
Broadband
Engineering
Lasers
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum cascade lasers
Quantum Optics
Spectrum analysis
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Zusammenfassung:Detection of multiple transitions in NO and H 2 O using multi-mode absorption spectroscopy, MUMAS, with a quantum cascade laser, QCL, operating at 5.3 μm at scan rates up to 10 kHz is reported. The linewidth of longitudinal modes of the QCL is derived from pressure-dependent fits to experimental MUMAS data. Variations in the spectral structure of the broadband, multi-mode, output of the commercially available QCL employed are analysed to provide accurate fits of modelled MUMAS signatures to the experimental data.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-016-6499-4