, Volume 39, Issue 12, pp 1308-1314

Growth and Luminescent Properties of NaGd(WO4)2:Yb3+ Crystals

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Data are presented on the spectroscopic properties of Yb3+-activated NaGd(WO4)2, a disordered scheelite-like tungstate potentially attractive as a gain medium. NaGd(WO4)2:Yb3+ crystals are grown by the Czochralski technique. The polarized absorption and luminescence spectra and the luminescence decay kinetics of oriented samples with different Yb3+ concentrations are studied at 300 K. The gain coefficients are calculated for different populations of the upper lasing level 2F 5/2 of the Yb3+ ion.