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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 22 — Nov. 15, 2006
  • pp: 3357–3359

Measurement of nitric oxide concentrations in flames by using electronic-resonance-enhanced coherent anti-Stokes Raman scattering

Waruna D. Kulatilaka, Ning Chai, Sameer V. Naik, Normand M. Laurendeau, Robert P. Lucht, Joel P. Kuehner, Sukesh Roy, and James R. Gord  »View Author Affiliations


Optics Letters, Vol. 31, Issue 22, pp. 3357-3359 (2006)
http://dx.doi.org/10.1364/OL.31.003357


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Abstract

We have measured nitric oxide ( NO ) concentrations in flames by using electronic-resonance-enhanced coherent anti-Stokes Raman spectroscopy (ERE-CARS). Visible pump and Stokes beams were tuned to a Q-branch vibrational Raman resonance of NO . A UV probe beam was tuned into resonance with specific rotational transitions in the ( v = 1 , v = 0 ) vibrational band in the A 2 Σ + X 2 Π electronic transition, thus providing a substantial electronic-resonance enhancement of the resulting CARS signal. NO concentrations were measured at levels down to 50 parts in 10 6 in H 2 air flames at atmospheric pressure. NO was also detected in heavily sooting C 2 H 2 air flames at atmospheric pressure with minimal background interference.

© 2006 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.6230) Spectroscopy : Spectroscopy, coherent anti-Stokes Raman scattering

ToC Category:
Spectroscopy

History
Original Manuscript: June 19, 2006
Revised Manuscript: August 1, 2006
Manuscript Accepted: August 14, 2006
Published: October 26, 2006

Citation
Waruna D. Kulatilaka, Ning Chai, Sameer V. Naik, Normand M. Laurendeau, Robert P. Lucht, Joel P. Kuehner, Sukesh Roy, and James R. Gord, "Measurement of nitric oxide concentrations in flames by using electronic-resonance-enhanced coherent anti-Stokes Raman scattering," Opt. Lett. 31, 3357-3359 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-22-3357

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