期刊
OPTICS LETTERS
卷 42, 期 4, 页码 875-878出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.42.000875
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资金
- Air Force Office of Scientific Research (AFOSR) [14RQ06COR, 15RQCOR202]
- Air Force Research Laboratory (AFRL) [FA8650-15-D-2518]
Two-photon, planar laser-induced fluorescence (TP-PLIF) of carbon monoxide was performed in steady and driven flames using femtosecond (fs) laser pulses at 1 kHz. Excitation radiation at 230.1 nm (full-width at half-maximum bandwidth of 270 cm(-1)) was used to pump many rovibrational two-photon transitions in the B-1 Sigma(+) <- X-1 Sigma(+) system. Visible fluorescence in the range 362-516 nm was captured using an image intensifier and high-speed camera. The signal dependence on excitation energy and wavelength is presented. Photolytic interferences from the ultraviolet laser were explored in a sooting diffusion flame. Using an excitation laser intensity of 1010 W/cm(2), negligible photolytic interferences were observed, and PLIF imaging of dynamic flame events was performed at 1 kHz.
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