Lifetime measurements with the pinhole method in presence of radiation trapping: II-application to Yb3+ doped ceramics and crystals

Year: 2012

Authors: Toci G., Alderighi D., Pirri A., Vannini M.

Autors Affiliation: CNR – National Research Council of Italy, Istituto di Fisica Applicata Carrara, IFAC-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, FI, Italy

Abstract: In this paper, we present an experimental verification of a theoretical model for the evaluation of the results of the so-called pinhole method for the measurement of the upper level lifetime in doped optical materials where the resonant reabsorption of the emitted fluorescence determines significant radiation trapping effects. As an experimental verification of the model, we measured the lifetime of the upper laser level of Yb 3+ in various crystals and ceramic samples usually employed for the realization of solid state laser sources. We verified that the previously reported model correctly predicts the intrinsic double exponential behavior of the fluorescence decay and also accounts for the effect of the short range reabsorption occurring with this specific measurement technique.


Volume: 106 (1)      Pages from: 73  to: 79

More Information: The activity described here has been supported by the project \”CTOTUS-Progetto integrato per lo sviluppo della Capacita Tecnologica e Operativa della Toscana per l\’Utilizzo dello Spazio\” funded by Regione Toscana under the program \”POR FESR, 2007-2013 Attivita\’ 1.1 Linee d\’intervento D\”, and by the project IFAC-RSTLCNR (Ricerca spontanea a Tema libero) number 959: \”Nuovi promettenti mezzi attivi drogati ad Ytterbio per laser tunabili nel vicino infrarosso\”.
KeyWords: Ceramic samples; Doped ceramics; Experimental verification; Exponential behaviors; Fluorescence decays; Laser level; Lifetime measurements; Measurement techniques; Radiation trapping; Solid-state laser sources; Theoretical models, Ceramic materials; Fluorescence; Solid state lasers; Ytterbium, Radiation
DOI: 10.1007/s00340-011-4632-y

Citations: 28
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