Laser remote sensing of methane in a working coal mine

R. K. DEFREEZ; R. A. ELLIOTT; W. D. EGAN; R. T. BOOS

doi:10.1364/CLEO.1985.FI5

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 1985),
paper FI5
•https://doi.org/10.1364/CLEO.1985.FI5

Laser remote sensing of methane in a working coal mine

R. K. DEFREEZ, R. A. ELLIOTT, W. D. EGAN, and R. T. BOOS

Conference on Lasers and Electro-Optics 1985

Baltimore, Maryland United States
21–24 May 1985
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Atmospheric Lidar (FI)

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R. K. DEFREEZ, R. A. ELLIOTT, W. D. EGAN, and R. T. BOOS, "Laser remote sensing of methane in a working coal mine," in Conference on Lasers and Electro-Optics, A. Gara, C. Giuliano, D. Auston, and R. Jacobs, eds., OSA Technical Digest (Optica Publishing Group, 1985), paper FI5.

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Abstract

A portable differential absorption lidar (DIAL) has been used to measure the concentration of methane in an operating underground coal mine. An Er:YAG laser-based system operating near 1.65µm has been used to establish the system sensitivity in actual mining conditions. In addition, an external cavity grating tuned diode laser source is being developed.¹ Details and performance specifications will be discussed with emphasis on the industrial use of such a laser remote sensing device.

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