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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 8 — Apr. 15, 2013
  • pp: 1250–1252

Sensing combustion intermediates by femtosecond filament excitation

He-Long Li, Huai-Liang Xu, Bo-Si Yang, Qi-Dai Chen, Tao Zhang, and Hong-Bo Sun  »View Author Affiliations


Optics Letters, Vol. 38, Issue 8, pp. 1250-1252 (2013)
http://dx.doi.org/10.1364/OL.38.001250


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Abstract

Simultaneous monitoring of multiple combustion intermediates using femtosecond filament-induced nonlinear spectroscopy is demonstrated. Clean fluorescence emissions from free radicals CH, CN, NH, OH, and C2, as well as atomic C and H, are observed when a femtosecond filament is formed in the laminar ethanol/air flame on an alcohol burner. The fluorescence signals of these species are found to vary as functions of the position of interaction of the filament with the flame along the vertical axis of the central combusting flow, opening up a possibility for remote combustion diagnostic in engines by the excitation of femtosecond laser filament.

© 2013 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(280.1740) Remote sensing and sensors : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Spectroscopy

History
Original Manuscript: January 11, 2013
Revised Manuscript: February 19, 2013
Manuscript Accepted: March 6, 2013
Published: April 4, 2013

Citation
He-Long Li, Huai-Liang Xu, Bo-Si Yang, Qi-Dai Chen, Tao Zhang, and Hong-Bo Sun, "Sensing combustion intermediates by femtosecond filament excitation," Opt. Lett. 38, 1250-1252 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-8-1250


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