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Gas detection by correlation spectroscopy employing a multimode diode laser

In English

Författare

  • Xiutao Lou
  • Gabriel Somesfalean
  • Zhang Zhiguo

Summary, in English

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 run 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.

Avdelning/ar

Publiceringsår

2008

Språk

Engelska

Sidor

2392-2398

Publikation/Tidskrift/Serie

Applied Optics

Volym

47

Issue

13

Dokumenttyp

Artikel i tidskrift

Förlag

Optical Society of America

Ämne

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 2155-3165