Detection of elemental mercury by multimode diode laser correlation spectroscopy
2012 (English)In: Optics Express, ISSN 1094-4087, Vol. 20, no 5, 4927-4938 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2012. Vol. 20, no 5, 4927-4938 p.
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-92342DOI: 10.1364/OE.20.004927ISI: 000301053200012OAI: oai:DiVA.org:kth-92342DiVA: diva2:516390
QC 201204182012-04-182012-04-022012-04-18Bibliographically approved