Detection of elemental mercury by multimode diode laser correlation spectroscopy

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

• Författare: Xiutao Lou; Gabriel Somesfalean; Sune Svanberg; Zhiguo Zhang; Shaohua Wu
• Avdelning/ar: Atomfysik
• Publiceringsår: 2012
• Språk: Engelska
• Sidor: 4927-4938
• Publikation/Tidskrift/Serie: Optics Express
• Volym: 20
• Issue: 5
• Fulltext: - 1014 kB; Download statistics
• Länkar: http://dx.doi.org/10.1364/OE.20.004927
• Dokumenttyp: Artikel i tidskrift
• Förlag: Optical Society of America
• Ämne: Atom and Molecular Physics and Optics
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1094-4087