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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 5 — Feb. 27, 2012
  • pp: 4927–4938

Detection of elemental mercury by multimode diode laser correlation spectroscopy

Xiutao Lou, Gabriel Somesfalean, Sune Svanberg, Zhiguo Zhang, and Shaohua Wu  »View Author Affiliations

Optics Express, Vol. 20, Issue 5, pp. 4927-4938 (2012)

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We demonstrate a method for elemental mercury detection based on correlation spectroscopy employing UV laser radiation generated by sum-frequency mixing of two visible multimode diode lasers. Resonance matching of the multimode UV laser is achieved in a wide wavelength range and with good tolerance for various operating conditions. Large mode-hops provide an off-resonance baseline, eliminating interferences from other gas species with broadband absorption. A sensitivity of 1 μg/m3 is obtained for a 1-m path length and 30-s integration time. The performance of the system shows promise for mercury monitoring in industrial applications.

© 2012 OSA

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3600) Lasers and laser optics : Lasers, tunable
(300.1030) Spectroscopy : Absorption
(300.6210) Spectroscopy : Spectroscopy, atomic

ToC Category:

Original Manuscript: January 3, 2012
Revised Manuscript: February 3, 2012
Manuscript Accepted: February 3, 2012
Published: February 13, 2012

Xiutao Lou, Gabriel Somesfalean, Sune Svanberg, Zhiguo Zhang, and Shaohua Wu, "Detection of elemental mercury by multimode diode laser correlation spectroscopy," Opt. Express 20, 4927-4938 (2012)

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