Figure 11From: Use of thulium-sensitized rare earth-doped low phonon energy crystalline hosts for IR sourcesTransient decays from the 3H 4 level of Tm3+. Room temperature normalized fluorescence decays from the 3H4 level of Tm3+ arising from 805-nm diode pumping. Comparison is made of 1,450-nm emission from Tm3+:KPb2Cl5 to 1,450-nm emission from Tm3+-Pr3+:KPb2Cl5.Back to article page