Field methane tracking with a portable and real-time open-gas monitor based on a cw-driven Pb-salt diode laser

R. Koga; M. Kosaka; H. Sano

doi:10.1016/0030-3992(85)90071-4

Field methane tracking with a portable and real-time open-gas monitor based on a cw-driven Pb-salt diode laser

R. Koga, M. Kosaka, H. Sano

Advanced Science Research Center

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

An atmospheric gas monitor with a PbSnTe diode laser has been developed. The open, 1 m optical path in a single-folded configuration enables local and non-contact measurement in a portable instrument. The accuracy is dependent on optical noise and a technique in diode-current modulation was effective in suppressing it. Analysis of the system noise based on the experimental data was made and a 10 ms interval was sufficient to attain an accuracy of 3 ppm for methane. Field measurements were made and a rapid fluctuation in the density of atmospheric methane density was recorded.

Original language	English
Pages (from-to)	139-144
Number of pages	6
Journal	Optics and Laser Technology
Volume	17
Issue number	3
DOIs	https://doi.org/10.1016/0030-3992(85)90071-4
Publication status	Published - Jun 1985

Keywords

gas concentration measurement
methane
optical equipment

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1016/0030-3992(85)90071-4

Cite this

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title = "Field methane tracking with a portable and real-time open-gas monitor based on a cw-driven Pb-salt diode laser",

abstract = "An atmospheric gas monitor with a PbSnTe diode laser has been developed. The open, 1 m optical path in a single-folded configuration enables local and non-contact measurement in a portable instrument. The accuracy is dependent on optical noise and a technique in diode-current modulation was effective in suppressing it. Analysis of the system noise based on the experimental data was made and a 10 ms interval was sufficient to attain an accuracy of 3 ppm for methane. Field measurements were made and a rapid fluctuation in the density of atmospheric methane density was recorded.",

keywords = "gas concentration measurement, methane, optical equipment",

author = "R. Koga and M. Kosaka and H. Sano",

note = "Funding Information: This work was financially supported by a Grant in Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan, and also by the Nissan Science Foundation.",

year = "1985",

month = jun,

doi = "10.1016/0030-3992(85)90071-4",

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journal = "Optics and Laser Technology",

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T1 - Field methane tracking with a portable and real-time open-gas monitor based on a cw-driven Pb-salt diode laser

AU - Koga, R.

AU - Kosaka, M.

AU - Sano, H.

N1 - Funding Information: This work was financially supported by a Grant in Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan, and also by the Nissan Science Foundation.

PY - 1985/6

Y1 - 1985/6

N2 - An atmospheric gas monitor with a PbSnTe diode laser has been developed. The open, 1 m optical path in a single-folded configuration enables local and non-contact measurement in a portable instrument. The accuracy is dependent on optical noise and a technique in diode-current modulation was effective in suppressing it. Analysis of the system noise based on the experimental data was made and a 10 ms interval was sufficient to attain an accuracy of 3 ppm for methane. Field measurements were made and a rapid fluctuation in the density of atmospheric methane density was recorded.

AB - An atmospheric gas monitor with a PbSnTe diode laser has been developed. The open, 1 m optical path in a single-folded configuration enables local and non-contact measurement in a portable instrument. The accuracy is dependent on optical noise and a technique in diode-current modulation was effective in suppressing it. Analysis of the system noise based on the experimental data was made and a 10 ms interval was sufficient to attain an accuracy of 3 ppm for methane. Field measurements were made and a rapid fluctuation in the density of atmospheric methane density was recorded.

KW - gas concentration measurement

KW - methane

KW - optical equipment

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JF - Optics and Laser Technology

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ER -

Field methane tracking with a portable and real-time open-gas monitor based on a cw-driven Pb-salt diode laser

Abstract

Keywords

ASJC Scopus subject areas

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