Abstract

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 700ppmm was achieved with good accuracy (2%) and linearity (R2=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.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Gas detection by correlation spectroscopy employing a multimode diode laser

Xiutao Lou, Gabriel Somesfalean, and Zhiguo Zhang
Appl. Opt. 47(13) 2392-2398 (2008)

Detection of elemental mercury by multimode diode laser correlation spectroscopy

Xiutao Lou, Gabriel Somesfalean, Sune Svanberg, Zhiguo Zhang, and Shaohua Wu
Opt. Express 20(5) 4927-4938 (2012)

Simultaneous detection of multiple-gas species by correlation spectroscopy using a multimode diode laser

X. T. Lou, G. Somesfalean, B. Chen, Y. G. Zhang, H. S. Wang, Z. G. Zhang, S. H. Wu, and Y. K. Qin
Opt. Lett. 35(11) 1749-1751 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription