Multicomponent gas analysis using broadband quantum cascade laser spectroscopy

Journal article (2014)
Department
ImPhys/Imaging Physics (AS) (TU Delft)
Copyright: © 2014 Optical Society of America
DOI: https://doi.org/doi:10.1364/OE.22.018299
Absorption OA-Fund TU Delft Chemical analysis Spectrometers and spectroscopic instrumentation Semiconductor lasers, quantum cascade Spectroscopy, infrared Spectroscopy, laser Spectroscopy, molecular
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Published Date

22-07-2014

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Source:

Optics Express, 22 (15), 2014

ISSN:

1094-4087

Source:

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-15-18299

Faculty

Applied Sciences

Department

ImPhys/Imaging Physics

Abstract

We present a broadband quantum cascade laser-based spectroscopic system covering the region between 850 and 1250 cm?1. Its robust multipass cavity ensures a constant interaction length over the entire spectral region. The device enables the detection and identification of numerous molecules present in a complex gas mixture without any pre-treatment in two minutes. We demonstrate that we can detect sub-ppmv concentration of acetone in presence of 2% of water at the same wavenumber region.