Upconversion luminescence of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals

@article{citeulike:2526125, abstract = {We observed a significant blue emission at 476 nm in Tm3+ and Yb3+-codoped KGd(WO4)2 monoclinic single crystals by pumping at 940 nm. The single crystals were grown using the top-seeded-solution-growth slow-cooling method (TSSG). We also report thulium emissions at 650 nm, 802 nm and 1.48 [mu]m. The emission spectra are characterized as a function of the Tm3+ and Yb3+ ions concentration and temperature from 6 K to room temperature. The energy upconversion excitation mechanism for thulium emitting levels is assigned to a cooperative energy transfer process by the ytterbium-sensitizer ions.}, author = {Guell, F. and Sole, R. and Gavalda, Jna and Aguilo, M. and Galan, M. and Diaz, F. and Massons, J.}, citeulike-article-id = {2526125}, doi = {10.1016/j.optmat.2006.10.028}, journal = {Optical Materials}, keywords = {kgw, optmat}, month = {October}, number = {2}, pages = {222--226}, posted-at = {2008-03-13 12:41:25}, priority = {2}, title = {Upconversion luminescence of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals}, url = {http://dx.doi.org/10.1016/j.optmat.2006.10.028}, volume = {30}, year = {2007} }

TY - JOUR ID - citeulike:2526125 L3 - citeulike-article-id:2526125 N2 - We observed a significant blue emission at 476 nm in Tm3+ and Yb3+-codoped KGd(WO4)2 monoclinic single crystals by pumping at 940 nm. The single crystals were grown using the top-seeded-solution-growth slow-cooling method (TSSG). We also report thulium emissions at 650 nm, 802 nm and 1.48 [mu]m. The emission spectra are characterized as a function of the Tm3+ and Yb3+ ions concentration and temperature from 6 K to room temperature. The energy upconversion excitation mechanism for thulium emitting levels is assigned to a cooperative energy transfer process by the ytterbium-sensitizer ions. IS - 2 JF - Optical Materials EP - 226 TI - Upconversion luminescence of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals VL - 30 SP - 222 KW - kgw KW - optmat AU - Guell, F AU - Sole, R AU - Gavalda, Jna AU - Aguilo, M AU - Galan, M AU - Diaz, F AU - Massons, J PY - 2007/10// UR - http://dx.doi.org/10.1016/j.optmat.2006.10.028 ER -