30 May 1997 Gas sensing using IR laser diode sources
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Proceedings Volume 3105, Chemical, Biochemical and Environmental Fiber Sensors IX; (1997); doi: 10.1117/12.276166
Event: Environmental Sensing III, 1997, Munich, Germany
Abstract
We give an overview of near IR laser diode based methods for gas sensing discussing both the devices enabling this technology and the techniques utilized. Of particular importance for this technology is development of single frequency laser diodes for laser based gas sensing. We discuss and present results on laser diode based gas sensing using sources such as distributed feedback laser diodes, vertical cavity laser diodes and other novel single frequency devices. Detection limits for particular gases of interest, e.g. methane, oxygen and hydrogen sulphide are discussed.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
James O'Gorman, Vincent Weldon, David McDonald, Juan J. Perez-Camacho, Brian Corbett, John Hegarty, "Gas sensing using IR laser diode sources", Proc. SPIE 3105, Chemical, Biochemical and Environmental Fiber Sensors IX, (30 May 1997); doi: 10.1117/12.276166; https://doi.org/10.1117/12.276166
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KEYWORDS
Semiconductor lasers

Absorption

Modulation

Gas lasers

Vertical cavity surface emitting lasers

Signal detection

Gases

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