| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1488779 | Materials Research Bulletin | 2013 | 5 Pages |
•Er3+/Pr3+ co-doped LiYF4 single crystal was prepared by Bridgman techniques.•Intense 2.7 μm emission was observed in Er3+/Pr3+ co-doped LiYF4 single crystal.•I–H model was used to fit the decay curves.
In this paper, we report the Bridgman growth of a Er3+/Pr3+ co-doped LiYF4 single crystal with a size of ~Φ12 mm × 140 mm and the observation of enhanced 2.7 μm mid-IR emission of the crystal. The emission characteristics and energy transfer of various parts of crystal upon excitation of a 980 nm laser diode are investigated. Population inversions between 4I13/2 and 4I11/2 levels have been achieved. The energy transfer processes are studied based on the I–H model, and the interaction between Er3+ and Pr3+ is confirmed to be electric dipole–dipole. The large energy transfer efficiency of 82.99% and excellent optical transmission indicate that this Er3+/Pr3+ co-doped LiYF4 single crystal has potential applications in 2.7 μm laser.
Graphical abstractThe energy transfer processes are studied based on the I–H model, and the interaction between Er3+ and Pr3+ is confirmed to be electric dipole–dipole (s = 6).Figure optionsDownload full-size imageDownload as PowerPoint slide
