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Proceedings Paper

Industrialized high-sensitivity fiber optic near-IR diode-laser-based gas analysis system
Author(s): Henrik Ahlberg; Stefan Helge Lundqvist; Robert Tell; Torbjoern Andersson
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Paper Abstract

An industrialized computer-controlled fiber optic laser diode gas analysis system is described. A unique signal processing scheme completely eliminates both non-gas-related transmission variation and long-term drift. Sensitivities better than 1 ppm(DOT)m and 200 ppm(DOT)m is routinely achieved for field-installed systems for ammonia and oxygen, respectively. due to the superior selectivity of laser diodes, interference effects from coexisting gases, such as water vapor in ammonia measurements, are easily avoided.

Paper Details

Date Published: 3 June 1994
PDF: 12 pages
Proc. SPIE 2112, Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements, (3 June 1994); doi: 10.1117/12.177291
Show Author Affiliations
Henrik Ahlberg, ALToptronic AB (Sweden)
Stefan Helge Lundqvist, ALToptronic AB (Sweden)
Robert Tell, ALToptronic AB (Sweden)
Torbjoern Andersson, ALToptronic AB (Sweden)


Published in SPIE Proceedings Vol. 2112:
Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements
Alan Fried; Dennis K. Killinger; Harold I. Schiff, Editor(s)

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