Femtosecond, two-photon, laser-induced fluorescence (TP-LIF) measurement of CO in high-pressure flames

被引：18

作者：

Rahman, K. Arafat ^{[1
]}

Patel, Karna S. ^{[1
]}

Slipchenko, Mikhail N. ^{[1
,4
]}

Meyer, Terrence R. ^{[1
]}

Zhang, Zhili ^{[2
]}

Wu, Yue ^{[2
]}

Gord, James R. ^{[3
]}

Roy, Sukesh ^{[4
]}

机构：

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

[2] Univ Tennessee, Dept Mech Aerosp & Biomed Engn, Knoxville, TN 37996 USA

[3] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA

[4] Spectral Energies LLC, 4065 Execut Dr, Beavercreek, OH 45430 USA

来源：

APPLIED OPTICS | 2018年 / 57卷 / 20期

关键词：

CARBON-MONOXIDE; EXCITATION; OXYGEN; BURNER; FLOWS;

D O I：

10.1364/AO.57.005666

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Quantitative, kiloherz-rate measurement of carbon monoxide mole fractions by femtosecond two-photon, laser-induced fluorescence (TP-LIF) was demonstrated in high-pressure, luminous flames over a range of fuel-air ratios. Femtosecond excitation at 230.1 nm was used to pump CO two-photon rovibrational X-1 Sigma(+)-> B-1 Sigma(+) transitions in the Hopfield-Birge system and avoid photolytic interferences with excitation irradiance similar to 1.7 x 10(10) W/cm(2). The effects of excitation wavelength, detection scheme, and potential sources of de-excitation were also assessed to optimize the signal-to-background and signal-to-noise ratios and achieve excellent agreement with theoretically predicted CO mole fractions at low and high pressure. (C) 2018 Optical Society of America

引用

页码：5666 / 5671

页数：6

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