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Proceedings Paper

Novel oxyfluoride glass and transparent glass-ceramics for fiber lasers and fiber amplifiers
Author(s): Takenobu Suzuki; Shin-ichiro Masaki; Kento Mizuno; Yasutake Ohishi
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Paper Abstract

Transparent glass-ceramics containing nano-crystals were prepared by controlled heat-treatment of conventionally melt-quenched NaF-YF3-Al2O3-SiO2 oxyfluoride glass. The precipitated crystallites were composed of only cubic NaYF4 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. NaYF4 has a crystal structure of a fluorite type that cation sites were randomly occupied by Na+ and Y3+. It is expected that the Y3+ sites can be substituted to other rare-earth ions which have the similar ionic radii. We have been prepared Tb3+ and Yb3+ 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.

Paper Details

Date Published: 17 May 2010
PDF: 6 pages
Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77210T (17 May 2010); doi: 10.1117/12.854090
Show Author Affiliations
Takenobu Suzuki, Toyota Technological Institute (Japan)
Shin-ichiro Masaki, Toyota Technological Institute (Japan)
Kento Mizuno, Toyota Technological Institute (Japan)
Yasutake Ohishi, Toyota Technological Institute (Japan)

Published in SPIE Proceedings Vol. 7721:
Solid State Lasers and Amplifiers IV, and High-Power Lasers
Thomas Graf; Gerhard G. Paulus; Jacob I. Mackenzie; Vincent Bagnoud; Catherine Le Blanc; Helena Jelinkov√°, Editor(s)

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