We have achieved quantitative two-dimensional Raman measurements of the concentration of methane in a laminar methane jet into nitrogen without multipassing the incident laser sheet with a coaxial flash-lamp-pumped dye laser. The measurements are compared with the results of direct numerical simulation for the particular flow field. We conclude that the accuracy of the technique is determined by limitations in the dynamic range and in the spatial resolution of the data acquired with an intensified camera.
© 2000 Optical Society of America
(110.2960) Imaging systems : Image analysis
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(140.3600) Lasers and laser optics : Lasers, tunable
(290.5860) Scattering : Scattering, Raman
Dimitrios C. Kyritsis, Phillip G. Felton, Yaping Huang, and Frediano V. Bracco, "Quantitative Two-Dimensional Instantaneous Raman Concentration Measurements in a Laminar Methane Jet," Appl. Opt. 39, 6771-6780 (2000)