Industrialized high-sensitivity fiber optic near-IR diode-laser-based gas analysis system

Henrik Ahlberg; Stefan Helge Lundqvist; Robert Tell; Torbjoern Andersson

doi:10.1117/12.177291

3 June 1994 Industrialized high-sensitivity fiber optic near-IR diode-laser-based gas analysis system

Henrik Ahlberg, Stefan Helge Lundqvist, Robert Tell, Torbjoern Andersson

Proceedings Volume 2112, Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements; (1994) https://doi.org/10.1117/12.177291
Event: SPIE's International Symposium on Optical Sensing for Environmental Monitoring, 1993, Atlanta, GA, United States

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.

Citation Download Citation

Henrik Ahlberg, Stefan Helge Lundqvist, Robert Tell, and Torbjoern Andersson "Industrialized high-sensitivity fiber optic near-IR diode-laser-based gas analysis system", Proc. SPIE 2112, Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements, (3 June 1994); https://doi.org/10.1117/12.177291

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