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Applied Optics


  • Vol. 40, Iss. 12 — Apr. 20, 2001
  • pp: 2010–2016

Pulsed laser photoacoustic detection of SO2 near 225.7 nm

Mohammed A. Gondal and Joseph Mastromarino  »View Author Affiliations

Applied Optics, Vol. 40, Issue 12, pp. 2010-2016 (2001)

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A trace concentration of SO2 near 225.7 nm has been detected with a master-oscillator power-oscillator laser system for the first time, to our knowledge. A photoacoustic absorption spectrum of SO2 has been recorded on the 1A21B2 (π–π*) transition. Parametric dependence of the photoacoustic signal has been investigated. A detection limit (signal-to-noise ratio of 1) of 1.3 parts in 109 [1.3 ppbv (parts per billion by volume)] for SO2 have been determined at 1 atmospheric pressure inside a photoacoustic cell.

© 2001 Optical Society of America

OCIS Codes
(070.1060) Fourier optics and signal processing : Acousto-optical signal processing
(280.1120) Remote sensing and sensors : Air pollution monitoring
(300.6430) Spectroscopy : Spectroscopy, photothermal

Original Manuscript: July 11, 2000
Revised Manuscript: November 15, 2000
Published: April 20, 2001

Mohammed A. Gondal and Joseph Mastromarino, "Pulsed laser photoacoustic detection of SO2 near 225.7 nm," Appl. Opt. 40, 2010-2016 (2001)

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