Near-infrared quantum cutting through a three-step energy transfer process in Nd 3+-Yb 3+ co-doped fluoroindogallate glasses

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Resumen

The Nd 3+-Yb 3+ couple was investigated in fluoroindogallate glasses using optical spectroscopy to elucidate the energy transfer mechanisms involved in the downconversion (DC) process. Upon excitation of a Nd 3+ ion by an ultraviolet photon, DC through a three-step energy transfer process occurs, in which the energy of the ultraviolet photon absorbed by the Nd 3+ ion is converted into three infrared photons emitted by Yb 3+ ions, i.e.quantum cutting (QC). In addition, with excitation in the visible, our results confirm that the DC process occurs through a one-step energy transfer process, in which the energy of a visible photon absorbed by the Nd 3+ ion is converted into only one infrared photon emitted by an Yb 3+ ion. Time-resolved measurements enabled the estimation of the efficiencies of the cross-relaxation processes between Nd 3+ and Yb 3+ ions.

Idioma originalInglés
Número de artículo385501
PublicaciónJournal of Physics Condensed Matter
Volumen24
N.º38
DOI
EstadoPublicada - 26 sep. 2012
Publicado de forma externa

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