A simple model of laser-induced fluorescence under arbitrary optical thickness conditions at the excitation wavelength

A simple model is worked out to investigate laser-induced fluorescence in media of arbitrary optical thicknesses at the excitation wavelength. Close-form expressions are obtained for laser fluence, absorbed energy density and emitted fluorescence signal as a function of optical thickness and inciden...

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Bibliographic Details
Published inJournal of quantitative spectroscopy & radiative transfer Vol. 111; no. 17; pp. 2528 - 2533
Main Authors Vidal, F., Laville, S., Goueguel, C., Loudyi, H., Rifai, K., Chaker, M., Sabsabi, M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2010
Subjects
Density
Excitation
Fluence
Fluorescence
Laser-induced fluorescence
Lasers
Modeling
Optical thickness
Saturation
Saturation curves
Wavelengths
Laser-induced fluorescence
Optical thickness
Modeling
Saturation curves
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Summary:A simple model is worked out to investigate laser-induced fluorescence in media of arbitrary optical thicknesses at the excitation wavelength. Close-form expressions are obtained for laser fluence, absorbed energy density and emitted fluorescence signal as a function of optical thickness and incident laser fluence. It is shown that in optically thick media saturation curves are not proportional to density of the species excited by the laser, except at saturation, and that the saturation fluence increases with optical thickness. Experimental saturation curves of lead in laser-produced plasmas of brass are discussed in the light of this model.
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ISSN:0022-4073
1879-1352
DOI:10.1016/j.jqsrt.2010.08.003