Reprints and permissions About this article Cite this article Zhao, C., Zhang, Q., Yang, G.et al.Laser-diode-excited Blue Upconversion in Tm3+/Yb3+-codoped TeO2-Ga2O3-R2O (R=Li, Na, K) Glasses.J Fluoresc18, 87–91 (2008). https://doi.org/10.1007/s10895-007-0240-y Download ...