Novel oxyfluoride glass and transparent glass-ceramics for fiber lasers and fiber amplifiers

Takenobu Suzuki; Shin-ichiro Masaki; Kento Mizuno; Yasutake Ohishi

doi:10.1117/12.854090

17 May 2010 Novel oxyfluoride glass and transparent glass-ceramics for fiber lasers and fiber amplifiers

Takenobu Suzuki, Shin-ichiro Masaki, Kento Mizuno, Yasutake Ohishi

Proceedings Volume 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers; 77210T (2010) https://doi.org/10.1117/12.854090
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

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.

Citation Download Citation

Takenobu Suzuki, Shin-ichiro Masaki, Kento Mizuno, and Yasutake Ohishi "Novel oxyfluoride glass and transparent glass-ceramics for fiber lasers and fiber amplifiers", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77210T (17 May 2010); https://doi.org/10.1117/12.854090

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