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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 30 — Oct. 20, 2000
  • pp: 5547–5559

Methods to Correct Planar Laser-Induced Fluorescence Distributions for Local Nonuniform Laser Attenuation

Genie G. M. Stoffels, Sander Stoks, Nico Dam, and J. J. ter Meulen  »View Author Affiliations


Applied Optics, Vol. 39, Issue 30, pp. 5547-5559 (2000)
http://dx.doi.org/10.1364/AO.39.005547


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Abstract

Planar laser-induced fluorescence is often used to obtain two-dimensional density distributions of specific molecules in reactive or nonreactive flows. In opaque environments, such as sooty flames or dusty air flows, the laser intensity decrease over the field of view must be taken into account. We describe two methods to determine the local extinction factor, and, from that, the local laser intensity. Both methods are based on elastic light scattering, one of which employs two elastic light scattering images, recorded simultaneously from the same probe volume, but illuminated from opposite directions. Although exact in principle, this method requires considerable experimental expenditure, and for this reason a more approximate method by use of only a single elastic scattering image is described as well. The results of both methods, applied to combustion diagnostics in an optically accessible Diesel engine, are compared.

© 2000 Optical Society of America

OCIS Codes
(100.2960) Image processing : Image analysis
(280.1740) Remote sensing and sensors : Combustion diagnostics
(290.5850) Scattering : Scattering, particles

Citation
Genie G. M. Stoffels, Sander Stoks, Nico Dam, and J. J. ter Meulen, "Methods to Correct Planar Laser-Induced Fluorescence Distributions for Local Nonuniform Laser Attenuation," Appl. Opt. 39, 5547-5559 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-30-5547

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