- Tytuł:
- Influence of Various Impurities on the Optical Properties of YbF$\text{}_{3}$-Doped CaF$\text{}_{2}$ Crystals
- Autorzy:
-
Stef, M.
Pruna, A.
Pecingina-Garjoaba, N.
Nicoara, I. - Powiązania:
- https://bibliotekanauki.pl/articles/2047870.pdf
- Data publikacji:
- 2007-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
52.25.Os
76.30.Kg
87.64.kv
42.55.Rz - Opis:
- Calcium fluoride crystals doped with YbF$\text{}_{3}$ and co-doped with LiF and NaF were grown using the vertical Bridgman method. Several of rare-earth ions (such as Eu, Sm, Ho, Tm, and Yb) can be stabilized in the divalent state in the CaF$\text{}_{2}$. The change of valence was attained by various methods. The optical absorption spectra reveal the characteristic absorption bands of the Yb$\text{}^{3+}$ and Yb$\text{}^{2+}$ ions. This means that the developed crystal growth process achieves a good Yb$\text{}^{3+}$ to Yb$\text{}^{2+}$ conversion in the as-grown crystals. The influence of other impurities, such as Na$\text{}^{+}$ or Li$\text{}^{+}$, on the absorption and emission spectrum of YbF$\text{}_{3}$-doped CaF$\text{}_{2}$ was studied. The Li$\text{}^{+}$ and Na$\text{}^{+}$ ions drastically decrease the absorption coefficient of the Yb$\text{}^{2+}$ ions in the UV band and the emission intensity by excitation in 230 nm.
- Źródło:
-
Acta Physica Polonica A; 2007, 112, 5; 1007-1012
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł