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

• DOI: 10.4302/plp.2016.4.07
• Publication Date: 2017-03-15T19:29:51Z
• Authors: Lucile Rutkowski; Alexandra C. Joha...; Damir Valiev; Amir Khodabakhsh; Arkadiusz Tkacz; Florian M. Schmidt; Aleksandra Foltyn...
• Keywords: Cavity Ring-Down Spectroscopy

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 Fourier transform spectrometer.By taking ratios spectra measured different heights above the burner we separate twenty transitions from largely overlapping water background. Weretrieve fits to lines relative variation concentration and temperature with height compare them 1-D simulations flamestructure. Full Text: PDF ReferencesG. Meijer, M. G. Boogaarts, R. T. Jongma, D. H. Parker A. Wodtke, "Coherent cavity ring down spectroscopy", Chem. Phys. Lett. 217, 1, 112 (1994). CrossRef S. Cheskis, I. Derzy, V. Lozovsky, Kachanov Romanini, "Cavity ring-down radicals low flame", Appl. B 66, 3, 377 (1998). X. Mercier, E. Therssen, J. F. Pauwels P. Desgroux, measurements radical diffusion flames.: A comparison laser-induced fluorescence direct laser absorption", 299, 75 (1999). Scherer, Voelkel Rakestraw, "Infrared ringdown (IR-CRLAS) flames", 64, 6, 699 (1997). Peeters, Berden "Near-infrared enhanced hot oven 73, 65 (2001). Aizawa, "Diode-laser wavelength-modulation for quantitative situ combustion gases", Opt. 40, 27, 4894 B. Löhden, Kuznetsova, K. Sengstock, Baev, et al., "Fiber intracavity multicomponent gas analysis atmosphere environments", 102, 2, 331 (2011). Matynia, Idir, Molet, C. Roche, "Absolute profiles high counterflow flames by coupling LIF, PLIF, techniques", 108, 393 (2012). Watt, Laurila, Kaminski Hult, Enhanced Spectroscopy High-Temperature H2O Near-Infrared Using Supercontinuum Light Source", Spectrosc. 63, 12, 1389 (2009). Abd Alrahman, Khodabakhsh, Schmidt, Z. Qu Foltynowicz, "Cavity-enhanced optical frequency comb high-temperature Express 22, 11, 13889 (2014). Maslowski, Fleisher, Bjork Ye, mid-infrared application trace hydrogen peroxide", 110, 163 (2013). Qu, Ghorbani, Valiev "Calibration-free scanned wavelength modulation ? sensing 23, 16492 (2015). L. Rutkowski, Johansson, Valiev, "Measurement Flame Optical Frequency Comb Spectroscopy", CLEO: Science Innovations SW4H.8 (2016). Rothman, Gordon, Y. Babikov, Barbe, "The HITRAN2012 molecular spectroscopic database", Quant. Radiat. Transf. 130, 4