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Detection of elemental mercury by multimode diode laser correlation spectroscopy

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Author

  • Xiutao Lou
  • Gabriel Somesfalean
  • Sune Svanberg
  • Zhiguo Zhang
  • Shaohua Wu

Summary, in English

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 mu g/m(3) 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. (C) 2012 Optical Society of America

Department/s

Publishing year

2012

Language

English

Pages

4927-4938

Publication/Series

Optics Express

Volume

20

Issue

5

Document type

Journal article

Publisher

Optical Society of America

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1094-4087