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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 22 — Aug. 1, 2009
  • pp: 4424–4429

Improved sensitivity gas detection by spontaneous Raman scattering

Michael P. Buric, Kevin P. Chen, Joel Falk, and Steven D. Woodruff  »View Author Affiliations

Applied Optics, Vol. 48, Issue 22, pp. 4424-4429 (2009)

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Accurate, real-time measurement of the dilute constituents of a gaseous mixture poses a significant challenge usually relegated to mass spectrometry. Here, spontaneous Raman backscattering is used to detect low pressure molecular gases. Rapid detection of gases in the 100 parts in 10 6 ( ppm ) range is described. Improved sensitivity is brought about by use of a hollow-core, photonic bandgap fiber gas cell in the backscattering configuration to increase collection efficiency and an image-plane aperture to greatly reduce silica-Raman background noise. Spatial and spectral properties of the silica noise were examined with a two-dimensional CCD detector array.

© 2009 Optical Society of America

OCIS Codes
(300.6450) Spectroscopy : Spectroscopy, Raman
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:

Original Manuscript: April 30, 2009
Revised Manuscript: July 1, 2009
Manuscript Accepted: July 6, 2009
Published: July 24, 2009

Michael P. Buric, Kevin P. Chen, Joel Falk, and Steven D. Woodruff, "Improved sensitivity gas detection by spontaneous Raman scattering," Appl. Opt. 48, 4424-4429 (2009)

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