Compositions: ceramic – Ceramic compositions – Devitrified glass-ceramics
Patent
1995-03-08
1996-08-13
Group, Karl
Compositions: ceramic
Ceramic compositions
Devitrified glass-ceramics
65 333, C03C 3112
Patent
active
055455956
ABSTRACT:
A high efficiency wavelength up-conversion transparent glass ceramics composition is provided containing a rare earth ion, which can be applied to short wavelength solid lasers, full color displays, infrared light detecting sensors, etc. The ceramic composition has the following chemical composition, in which fluoride fine crystals containing rare earth ions are preferentially precipitated:
REFERENCES:
patent: 3709827 (1973-01-01), Auzel
patent: 4032351 (1977-06-01), Auzel et al.
patent: 4537864 (1985-08-01), Tick
patent: 4752593 (1988-06-01), Tick
Wang et al., "New Transparent Vitroceramics Codoped With Er.sup.3+ and Yb.sup.3+ for Efficient Frequency Upconversion", Appl. Phys. Lett. vol. 63 No. 24, Dec. 13, 1993, pp. 3268-3270.
Ribeiro et al., "Structural Studies in Lead Fluorogermanate and Fluorosilicate Glasses", Journal of Alloys and Compounds, 180 (1992) pp. 117-124.
Auzel et al., "Rare Earth Doped Vitroceramics: New, Efficient, Blue and Green Emitting Materials for Infared Up-Conversion ", Journal of Electrochemical Society, vol. 122, No. 1, pp. 101-107. Jan. 1975.
Ohwaki Junichi
Wang Yuhu
Group Karl
Nippon Telegraph and Telephone Corporation
Sumita Optical Glass Inc.
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