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Oxygen measurement by multimode diode lasers employing gas correlation spectroscopy

Författare

  • Xiutao Lou
  • Gabriel Somesfalean
  • Bin Chen
  • Zhiguo Zhang

Summary, in English

Multimode diode laser (MDL)-based correlation spectroscopy (COSPEC) was used to measure oxygen in ambient air, thereby employing a diode laser (DL) having an emission spectrum that overlaps the oxygen absorption lines of the A band. A sensitivity of 700 ppm m was achieved with good accuracy (2%) and linearity (R-2 = 0.999). For comparison, measurements of ambient oxygen were also performed by tunable DL absorption spectroscopy (TDLAS) technique employing a vertical cavity surface emitting laser. We demonstrate that, despite slightly degraded sensitivity, the MDL-based COSPEC-based oxygen sensor has the advantages of high stability, low cost, ease-of-use, and relaxed requirements in component selection and instrument buildup compared with the TDLAS-based instrument. (C) 2009 Optical Society of America

Avdelning/ar

Publiceringsår

2009

Språk

Engelska

Sidor

990-997

Publikation/Tidskrift/Serie

Applied Optics

Volym

48

Issue

5

Dokumenttyp

Artikel i tidskrift

Förlag

Optical Society of America

Ämne

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 2155-3165