Figure 2From: Use of thulium-sensitized rare earth-doped low phonon energy crystalline hosts for IR sourcesFluorescence from Tm3+:KPb 2 Cl 5 . Fluorescence spectrum at 300 K between 1,100 and 2,000 nm of Tm3+:KPb2Cl5 that results from pumping with an 805-nm laser diode.Back to article page