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Absorption spectroscopy of CO2 at 4.3 m utilizing an off-beam QEPAS Spectrophone and an IR-LED

: Böttger, S.; Willer, U.; Schade, W.

Optical Society of America -OSA-, Washington/D.C.:
CLEO: QELS Fundamental Science : 9.-14.6.2013, San Jose, CA, USA
Washington, DC: OSA, 2013 (OSA technical digest series)
ISBN: 978-1-55752-972-5
2 pp.
Conference on Lasers and Electro Optics (CLEO) <2013, San Jose/Calif.>
Quantum Electronics and Laser Science - Fundamental Science Conference (QELS) <2013, San Jose/Calif.>
Conference Paper
Fraunhofer HHI ()

An IR-LED at 4.3 m and an off-beam QEPAS spectrophone as optical detector are utilized for absorption spectroscopy. With an absorption path of 5 cm a detection limit of 150 ppm is achieved for carbon dioxide.