| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1795529 | Journal of Crystal Growth | 2008 | 6 Pages |
Abstract
Calcium fluoride crystals doped with YbF3 and PbF2-, NaF- and LiF-codoped were grown using the vertical Bridgman method. Transparent, high quality, with various high Yb2+ contents in the as-grown crystals has been obtained using a special procedure. The optical absorption spectra reveal the characteristic ultraviolet (UV) absorption bands of the divalent Yb ions. Influence of the codoping with Pb2+, Li+ and Na+ ions on the absorption spectra and on the Yb2+ ions content has been studied. High-intensity emission bands in the near-UV spectral region, not reported before, have been observed for excitation by 230 nm. A comparison of our results with those obtained by other authors is also given.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Irina Nicoara, Marius Stef, Andreea Pruna,