Gas detection by correlation spectroscopy employing a multimode diode laser

Lou Xiutao; Gabriel Somesfalean; Zhang Zhiguo

doi:10.1364/AO.47.002392

Gas detection by correlation spectroscopy employing a multimode diode laser

Lou Xiutao
, Gabriel Somesfalean
, Zhang Zhiguo^*

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology
Lund University

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

24 Scopus citations

Abstract

A gas sensor based on the gas-correlation technique has been developed using a multimode diode laser (MDL) in a dual-beam detection scheme. Measurement of CO₂ mixed with CO as an interfering gas is successfully demonstrated using a 1570 nm tunable MDL. Despite overlapping absorption spectra and occasional mode hops, the interfering signals can be effectively excluded by a statistical procedure including correlation analysis and outlier identification. The gas concentration is retrieved from several pair-correlated signals by a linear-regression scheme, yielding a reliable and accurate measurement. This demonstrates the utility of the unsophisticated MDLs as novel light sources for gas detection applications.

Original language	English
Pages (from-to)	2392-2398
Number of pages	7
Journal	Applied Optics
Volume	47
Issue number	13
DOIs	https://doi.org/10.1364/AO.47.002392
State	Published - 1 May 2008

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title = "Gas detection by correlation spectroscopy employing a multimode diode laser",

abstract = "A gas sensor based on the gas-correlation technique has been developed using a multimode diode laser (MDL) in a dual-beam detection scheme. Measurement of CO2 mixed with CO as an interfering gas is successfully demonstrated using a 1570 nm tunable MDL. Despite overlapping absorption spectra and occasional mode hops, the interfering signals can be effectively excluded by a statistical procedure including correlation analysis and outlier identification. The gas concentration is retrieved from several pair-correlated signals by a linear-regression scheme, yielding a reliable and accurate measurement. This demonstrates the utility of the unsophisticated MDLs as novel light sources for gas detection applications.",

author = "Lou Xiutao and Gabriel Somesfalean and Zhang Zhiguo",

year = "2008",

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AU - Somesfalean, Gabriel

AU - Zhiguo, Zhang

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N2 - A gas sensor based on the gas-correlation technique has been developed using a multimode diode laser (MDL) in a dual-beam detection scheme. Measurement of CO2 mixed with CO as an interfering gas is successfully demonstrated using a 1570 nm tunable MDL. Despite overlapping absorption spectra and occasional mode hops, the interfering signals can be effectively excluded by a statistical procedure including correlation analysis and outlier identification. The gas concentration is retrieved from several pair-correlated signals by a linear-regression scheme, yielding a reliable and accurate measurement. This demonstrates the utility of the unsophisticated MDLs as novel light sources for gas detection applications.

AB - A gas sensor based on the gas-correlation technique has been developed using a multimode diode laser (MDL) in a dual-beam detection scheme. Measurement of CO2 mixed with CO as an interfering gas is successfully demonstrated using a 1570 nm tunable MDL. Despite overlapping absorption spectra and occasional mode hops, the interfering signals can be effectively excluded by a statistical procedure including correlation analysis and outlier identification. The gas concentration is retrieved from several pair-correlated signals by a linear-regression scheme, yielding a reliable and accurate measurement. This demonstrates the utility of the unsophisticated MDLs as novel light sources for gas detection applications.

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JO - Applied Optics

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Gas detection by correlation spectroscopy employing a multimode diode laser

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