Two-Beam Femtosecond Rotational CARS for One-Dimensional Thermometry in a Turbulent, Sooting Jet Flame

被引：0

作者：

Richardson, Daniel R. ^{[1
]}

Roy, Sukesh ^{[1
]}

Gord, James R. ^{[2
]}

Kearney, Sean P. ^{[3
]}

机构：

[1] Spectral Energies LLC, 5100 Springfield St, Dayton, OH 45431 USA

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

[3] Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA

来源：

FRONTIERS IN ULTRAFAST OPTICS: BIOMEDICAL, SCIENTIFIC, AND INDUSTRIAL APPLICATIONS XVII | 2017年 / 10094卷

基金：

美国能源部;

关键词：

Ultrafast spectroscopy; combustion thermometry; coherent anti-Stokes Raman scattering; STOKES-RAMAN SCATTERING; SHOT;

D O I：

10.1117/12.2248914

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Single-laser-shot femtosecond rotational coherent anti-Stokes Raman scattering (fs-RCARS) temperature measurements are performed across a 6-mm line in a turbulent, sooting ethylene jet flame to characterize temperature gradients. A 60fs pulse is used to excite many rotational Raman transitions in N-2, and a 160-ps pulse is used to probe the Raman coherence. The spatial resolution of the measurements is 500 mu m in the direction of beam propagation and 50 mu m in the transverse directions. Measurements have been performed at multiple locations in the jet flame, and the measured temperature are similar to previously recorded point measurements. Future work will include performing simultaneous laser-induced incandescence (LII) measurements to measure soot volume fraction to perform joint statistical analysis of the sooting turbulent flame.

引用

页数：5

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