Fabrication and Properties of High Quality Transparent Ho:YAG Ceramics

2012 ◽  
Vol 185 ◽  
pp. 51-54
Author(s):  
Hao Yang ◽  
Jian Zhang ◽  
Xian Peng Qin ◽  
De Wei Luo ◽  
Jan Ma ◽  
...  
Keyword(s):  
Cross Section ◽  
Yttrium Aluminum Garnet ◽  
Transparent Ceramics ◽  
Reactive Sintering ◽  
Photoluminescence Spectra ◽  
Vacuum Sintering ◽  
High Quality ◽  
Average Grain Size ◽  
Yttrium Aluminum ◽  
Sintering Method

High quality holmium doped Yttrium Aluminum Garnet (YAG) transparent ceramics were fabricated by a reactive sintering method under vacuum. Fully dense Ho:YAG ceramics with the average grain size of ~ 10 μm were obtained after vacuum sintering at 1780 for 8 h. The optical properties, microstructures and photoluminescence spectra of the fabricated Ho:YAG ceramics were investigated. The transmittances of Ho:YAG ceramic are higher than 82% at 400 nm and 84% at 2400 nm. The absorption coefficient was 1.32 cm-1 for 1.5 at.% Ho:YAG at 1907 nm. And the absorption cross section of the Ho:YAG ceramic is 0.645×10-20 cm2.

Fabrication and Upconversion Luminescence of Highly Transparent Er:YAG Ceramics

2012 ◽  
Vol 185 ◽  
pp. 55-59 ◽  
Author(s):  
Xian Peng Qin ◽  
Jian Zhang ◽  
Hao Yang ◽  
De Wei Luo ◽  
Jan Ma ◽  
...  
Keyword(s):  
Grain Size ◽  
Optical Properties ◽  
Solid State ◽  
Grain Boundary ◽  
Upconversion Luminescence ◽  
Secondary Phase ◽  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
Average Grain Size ◽  
Sintering Method

Highly transparent Er:YAG ceramics with different Er concentration were fabricated by a solid-state reaction and vacuum sintering method. The optical properties, the microstructure and the upconversion luminescence of the Er:YAG ceramics were investigated. For 3 mm thick samples, the in-line transmittances of the as-fabricated Er:YAG ceramics at the wavelength of 1100 nm and 400 nm were about 84% and 82%, respectively, which was very close to the theoretical transmittance of YAG ceramics. The micrograph of the Er:YAG transparent ceramics exhibited a pore-free structure and the average grain size was about 10 μm. The grain boundary of the ceramics was clean and no secondary phase was detected. When pumped by a 980 nm LD, the strong green and red upconversion luminescences in the Er:YAG ceramics were observed. The different upconversion mechanisms depending on Er concentration in the Er:YAG ceramics were also discussed.

A low viscosity slurry system for fabricating chromium doped yttrium aluminum garnet (Cr:YAG) transparent ceramics

2015 ◽  
Vol 35 (14) ◽  
pp. 3873-3878 ◽  
Author(s):  
Wang Guo ◽  
Jiquan Huang ◽  
Yue Lin ◽  
Qiufeng Huang ◽  
Binjie Fei ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Transparent Ceramics ◽  
Low Viscosity ◽  
Yttrium Aluminum ◽  
Slurry System

Fabrication of High Transparent YAG Ceramics by Vacuum Sintering at Low Temperature

2008 ◽  
Vol 368-372 ◽  
pp. 420-422 ◽  
Author(s):  
Zhi Hui Chen ◽  
Jiang Tao Li ◽  
Jiu Jun Xu
Keyword(s):  
Low Temperature ◽  
Yttrium Aluminum Garnet ◽  
Precipitation Method ◽  
Green Body ◽  
Vacuum Sintering ◽  
Visible Wavelength ◽  
Sintering Additive ◽  
Yttrium Aluminum ◽  
Co Precipitation

Yttrium aluminum garnet (YAG) nanopowders were synthesized by n-amyl co-precipitation method. Transparent YAG ceramics were achieved by sintering the green body at 1800°C and then 1600°C for ten hours with TEOS as sintering additive. The transmittance of the sample was 75% at visible wavelength of 800nm.

Application of stereology on microstructure of neodymium-doped yttrium aluminum garnet (Nd:YAG) transparent ceramics

2007 ◽  
Vol 445-446 ◽  
pp. 180-185 ◽  
Author(s):  
Huashan Zhang ◽  
Hui Han ◽  
Chunhui Su ◽  
Hongbo Zhang ◽  
Zhaoxia Hou ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Transparent Ceramics ◽  
Yttrium Aluminum

Application of Stereology on Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) Transparent Ceramics

2006 ◽  
Vol 24 (5) ◽  
pp. 538-542 ◽  
Author(s):  
Huashan Zhang ◽  
Min Jing ◽  
Chunhui Su ◽  
Hongbo Zhang ◽  
Zhaoxia Hou ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Transparent Ceramics ◽  
Yttrium Aluminum

Up-conversion and near infrared luminescence in Y2O3: Er3+, Yb3+ transparent ceramics

2016 ◽  
Vol 09 (01) ◽  
pp. 1650011 ◽  
Author(s):  
Liang Li ◽  
Xi-Yan Zhang ◽  
Zhao-Hui Bai ◽  
Wei-Li Dong ◽  
Hui Shi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Precipitation Method ◽  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
Infrared Luminescence ◽  
Ceramic Samples ◽  
Co Precipitation ◽  
Increasing Temperature ◽  
Sintering Method ◽  
Co Doped

Er[Formula: see text]/Yb[Formula: see text] co-doped Y2O3 transparent ceramics were fabricated by vacuum sintering method. The Y2O3: Er[Formula: see text]:Yb[Formula: see text] nonopowders were prepared by co-precipitation method in advance. The morphology of powders and ceramics as investigated. The powders exhibited well dispersive condition with 100[Formula: see text]nm in diameter. The compactness of ceramics increased obviously with the increasing temperature. No pore was found in the ceramic sintered at [Formula: see text]C. The ceramic samples showed intense near infrared luminescence peaking at 1535[Formula: see text]nm under the excitation of 980[Formula: see text]nm lasers, assigned to the [Formula: see text] transition of Er[Formula: see text]. The intense up-conversion emissions were observed under the excitation of 980[Formula: see text]nm and 1550[Formula: see text]nm lasers.

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