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BIBTEX RIS

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

2011; Optica Publishing Group; Volume: 36; Issue: 19 Linguagem: Inglês

10.1364/ol.36.003927

ISSN

1539-4794

Autores

Joseph D. Miller, Sascha R. Engel, Terrence R. Meyer, Thomas Seeger, Alfred Leipertz,

Tópico(s)

Laser Design and Applications

Resumo

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.

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