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Fluorescence saturation measurements of 3-pentanone

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Abstract

The saturation characteristics of 3-pentanone fluorescence were investigated in an ambient temperature and pressure cell by imaging the fluorescence produced by a focused quadrupled Nd:YAG laser beam. The onset of fluorescence saturation was observed at laser fluences around 0.06 J/cm2, which is only about 1.3% of estimates that assume a two-level model and use measured values of the fluorescence lifetime and absorption cross-section. A spatially resolved model indicated that the saturation fluence changed only 10% when a Gaussian profile was used instead of a top-hat profile. Laser sources with significantly different temporal profiles will have different threshold fluence levels, but the present results suggest that saturation effects should be monitored in planar laser-induced fluorescence imaging experiments using 3-pentanone.

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Correspondence to B. R. Petersen.

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Petersen, B.R., Ghandhi, J.B. & Koch, J.D. Fluorescence saturation measurements of 3-pentanone. Appl. Phys. B 93, 639–644 (2008). https://doi.org/10.1007/s00340-008-3189-x

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  • DOI: https://doi.org/10.1007/s00340-008-3189-x

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