Planar laser-induced fluorescence imaging of carbon monoxide using vibrational (infrared) transitions
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We report a new imaging diagnostic suitable for measurements of infrared-active molecules, namely infrared planar laser-induced fluorescence (IR PLIF), in which a tunable infrared source is used to excite vibrational transitions in molecules and vibrational fluorescence is collected by an infrared camera. A nanosecond-pulse Nd:YAG-pumped KTP/KTA OPO/OPA system is used to generate 12 mJ of tunable output near 2.35 μm which excites the 2ν band of carbon monoxide (CO); fluorescence resulting from excited CO is collected at 4.7 μm by using an InSb focal plane array. Quantitative, high-SNR PLIF imaging of gas-phase CO is demonstrated at a 10-Hz acquisition rate with a minimum detection limit of 1350 ppm at 300 K.
- Planar laser-induced fluorescence imaging of carbon monoxide using vibrational (infrared) transitions
Applied Physics B
Volume 69, Issue 5-6 , pp 505-507
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- PACS: 32.50.+d; 34.50.Ez; 39.30.+w
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