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Effect of temperature on spectroscopic features relevant to laser performance of YVO4:Tm3+, GdVO4:Tm3+, and LuVO4:Tm3+ crystals.

Identifieur interne : 000465 ( PubMed/Corpus ); précédent : 000464; suivant : 000466

Effect of temperature on spectroscopic features relevant to laser performance of YVO4:Tm3+, GdVO4:Tm3+, and LuVO4:Tm3+ crystals.

Auteurs : Radosław Lisiecki ; Piotr Solarz ; Gra Yna Dominiak-Dzik ; Witold Ryba-Romanowski ; Tadeusz Łukasiewicz

Source :

RBID : pubmed:21124572

Abstract

Optical spectra and luminescence decay curves were measured for thulium-doped YVO(4), GdVO(4), and LuVO(4) single crystals as a function of temperature in the 300-670 K temperature region. In spite of structural similarity, the three systems studied display significantly different transition intensities and nonradiative relaxation rates. It was found, in particular, that the peak value of the pump band absorption intensity diminishes by about 30% for Tm:YVO(4) and Tm:GdVO(4), and the effective emission cross section for the laser transition of Tm(3+) diminishes by a factor of 2 roughly when temperature increases from 300 to 500 K. An unusually small quantum efficiency of the upper laser level in Tm:LuVO(4) has been derived from the analysis of luminescence decay curves.

PubMed: 21124572

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pubmed:21124572

Le document en format XML

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