Detection of OH in an atmospheric flame at 1.5 um using optical frequency comb spectroscopy


  • Lucile Rutkowski Department of Physics, Umea University
  • Alexandra C. Johansson Department of Physics, Umea University
  • Damir Valiev Department of Applied Physics and Electronics, Umea University
  • Amir Khodabakhsh Department of Physics, Umea University
  • Arkadiusz Tkacz Military University of Technology, Warsaw
  • Florian M. Schmidt Department of Applied Physics and Electronics, Umea University
  • Aleksandra Foltynowicz Department of Physics, Umea University



We report broadband detection of OH in a premixed CH4/air flat flame at atmospheric pressure using cavity-enhanced absorption spectroscopy based on an Er:fiber femtosecond laserand a Fourier transform spectrometer.By taking ratios of spectra measured at different heights above the burner we separate twenty OH transitions from the largely overlapping water background. Weretrieve from fits to the OH lines the relative variation of the OH concentration and flame temperature with height above the burner and compare them with 1-D simulations of the flamestructure.

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How to Cite

L. Rutkowski, “Detection of OH in an atmospheric flame at 1.5 um using optical frequency comb spectroscopy”, Photonics Lett. Pol., vol. 8, no. 4, pp. pp. 110–112, Dec. 2016.