Novel oxyfluoride glass and transparent glass-ceramics for fiber lasers and fiber amplifiers
この論文をさがす
説明
Transparent glass-ceramics containing nano-crystals were prepared by controlled heat-treatment of conventionally melt-quenched NaF-YF 3 -Al 2 O 3 -SiO 2 oxyfluoride glass. The precipitated crystallites were composed of only cubic NaYF 4 and the average diameter was estimated as less than 10 nm from the X-ray diffraction analysis. The crystallites were so small that the transparency of the glass was kept after crystallization. NaYF 4 has a crystal structure of a fluorite type that cation sites were randomly occupied by Na + and Y 3+ . It is expected that the Y 3+ sites can be substituted to other rare-earth ions which have the similar ionic radii. We have been prepared Tb 3+ and Yb 3+ co-doped glass and glass-ceramics. Green fluorescence was observed when the glass and glass-ceramics were excited by a 974 nm laser. The up-conversion intensity was enhanced by the crystallization.
収録刊行物
-
- SPIE Proceedings
-
SPIE Proceedings 2010-04-30
SPIE