Cavity-enhanced optical frequency comb spectroscopy of high-temperature H2O in a flame
2014 (English)In: Optics Express, ISSN 1094-4087, Vol. 22, no 11, 13889-13895 p.Article in journal (Refereed) Published
We demonstrate near-infrared cavity-enhanced optical frequency comb spectroscopy of water in a premixed methane/air flat flame. The detection system is based on an Er:fiber femtosecond laser, a high finesse optical cavity containing the flame, and a fast-scanning Fourier transform spectrometer (FTS). High absorption sensitivity is obtained by the combination of a high-bandwidth two-point comb-cavity lock and auto-balanced detection in the FTS. The system allows recording high-temperature water absorption spectra with a resolution of 1 GHz and a bandwidth of 50 nm in an acquisition time of 0.4 s, with absorption sensitivity of 4.2 x 10 (9) cm(-1) Hz(-1/2) per spectral element.
Place, publisher, year, edition, pages
2014. Vol. 22, no 11, 13889-13895 p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:umu:diva-91203DOI: 10.1364/OE.22.013889ISI: 000337501600113OAI: oai:DiVA.org:umu-91203DiVA: diva2:735142