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Optics Letters

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  • Vol. 36, Iss. 19 — Oct. 1, 2011
  • pp: 3927–3929

High-speed CH planar laser-induced fluorescence imaging using a multimode-pumped optical parametric oscillator

Joseph D. Miller, Sascha R. Engel, Terrence R. Meyer, Thomas Seeger, and Alfred Leipertz  »View Author Affiliations


Optics Letters, Vol. 36, Issue 19, pp. 3927-3929 (2011)
http://dx.doi.org/10.1364/OL.36.003927


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Abstract

We report on high-speed CH planar laser-induced fluorescence (PLIF) imaging in turbulent diffusion flames using a multimode-pumped optical parametric oscillator (OPO). The OPO is pumped by the third-harmonic output of a multimode Nd:YAG cluster for direct signal excitation in the A-X (0,0) band of the CH radical. The lasing threshold, conversion efficiency, and linewidth are shown to depend on the number of pump passes in the ring cavity of the OPO. Single-shot CH PLIF images are acquired at 10 kHz with excitation energy up to 6 mJ / pulse at 431.1 nm . Signal-to-noise ratios of 25 35 are the highest yet reported for high-speed CH PLIF.

© 2011 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: July 5, 2011
Revised Manuscript: September 7, 2011
Manuscript Accepted: September 7, 2011
Published: September 30, 2011

Citation
Joseph D. Miller, Sascha R. Engel, Terrence R. Meyer, Thomas Seeger, and Alfred Leipertz, "High-speed CH planar laser-induced fluorescence imaging using a multimode-pumped optical parametric oscillator," Opt. Lett. 36, 3927-3929 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-19-3927

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