Optical Materials Express
·
2014
·Vol. 4
·期 5
·1042-1049
·
IF 2.923
Lin Ge,Jiang Li,Zhiwei Zhou,Haiyun Qu,Manjiang Dong,Yan Zhu,Tengfei Xie,Wei Li,Min Chen,Huamin Kou,Yun Shi,Yubai Pan,Xiqi Feng,Jingkun Guo
Composite YAG/Nd:YAG/YAG transparent ceramics for planar waveguide laser were fabricated by non-aqueous tape casting and solid-state reactive sintering. The slurry made from the oxide powder mixtures shows a shear thinning behavior. The morphologies of the tapes were homogeneous in structure, and the tapes had appropriate strength and toughness. After calcining at 600°C for 10h in air, the samples contained less than 0.05wt.% of carbon. No gaps were found between the layers on the fracture surface of the green body compacted by cold isostatic pressing. The composite YAG/Nd:YAG/YAG transparent ceramics with in-line transmittance of 82.5% at 1064nm were obtained by vacuum-sintering at 1760°C for 30h, whose average grain size is 36.8μm. The diffusion distance of the Nd3+ ions was about 150μm along the thickness direction of the ceramics.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2017
·
IF 3.454
Pande Zhang,Benxue Jiang,Yiguang Jiang,Ge Zhang,Shuilin Chen,Jintai Fan,Long Zhang
Composite YAG/Nd:LuAG laser materials were prepared by the ceramization of YAG single crystals from the original bonding interfaces of green bodies (optical contacted YAG crystals and Nd:LuAG ceramics). And the morphology, microstructural characteristics and optical properties of the composite materials were studied. The results indicated that Nd:LuAG ceramics and YAG crystals were completely combined without bonding interfaces. They were pore-free at the original contacting interfaces of the YAG/Nd:LuAG transparent materials and the in-line transmittance of the specimens reached 84% at 1064 nm. This suggests that ceramization of YAG single crystals is a promising way to fabricate composite YAG/Nd:LuAG transparent materials.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2016
·
IF 2.183
Lin Ge,Jiang Li,Haiyun Qu,Juntao Wang,Jiao Liu,Jiawei Dai,Zhiwei Zhou,Binglong Liu,Huamin Kou,Yun Shi,Zheng Wang,Yubai Pan,Qingsong Gao,Jingkun Guo
The sintering behavior and doping concentration profile of the planar waveguide YAG/Nd:YAG/YAG ceramics by the tape casting and solid-state reaction method were investigated on the basis of densification trajectory, microstructure evolution, and Nd 3+ ions diffusion . The porosity of the green body by tape casting and cold isostatic pressing is about 38.6%. And the green bodies were consolidated from 1100 °C to 1800 °C for 0.5–20 h to study the densification and the doping diffusion behaviors. At the temperature higher than 1500 °C, pure YAG phase is formed, followed by the densification and grain growth process. With the increase of temperature, two sintering stages occur, corresponding to remarkable densification and significant grain growth, respectively. The mechanism controlling densification at 1550 °C is grain boundary diffusion. The diffusion of Nd 3+ ions is more sensitive to temperature than the sintering time, and the minimum temperature required for the obvious diffusion of Nd 3+ ions is higher than 1700 °C. Finally, planar waveguide YAG/1.5 at.%Nd:YAG/YAG transparent ceramics with in-line transmittance of 84.8% at 1064 nm were obtained by vacuum-sintering at 1780 °C for 30 h. The fluorescence lifetime of 4 F 3/2 state of Nd 3+ in the specimen is about 259 μs. The prepared ceramic waveguide was tested in a laser amplifier and the laser pulse was amplificated from 87 mJ to 238 mJ, with the pump energy of 680 mJ.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2017
·
IF 2.238
Yu Zhao,Qiang Liu,Lin Ge,Chao Wang,Wenxue Li,Chao Yang,Juntao Wang,Lei Yuan,Tengfei Xie,Huamin Kou,Yubai Pan,Qingsong Gao,Yong Bo,Qinjun Peng,Zuyan Xu,Jiang Li
Highly transparent YAG/10at.%Yb:YAG/YAG planar waveguide ceramics were fabricated by the non-aqueous tape casting and solid-state reactive sintering technology. The tapes are relatively homogeneous and the green body shows a dense structure without distinct interfaces after the treatment of debinding and cold isostatic pressing . YAG/10at.%Yb:YAG/YAG ceramics with almost full dense structure were obtained by vacuum-sintering at 1760 °C for 30 h. For the mirror-polished sample with the thickness of 3.5 mm, the In-line transmittance was measured to be 83.6% at the visual wavelength of 400 nm. The diffusion distance of the Yb 3+ ions was about 215 μm along the thickness direction of the ceramics. In the lasing experiments, the YAG/10at.%Yb:YAG/YAG planar waveguide ceramics were end-pumped by a 976 nm semiconductor diode laser and enabled efficient continuous-wave lasers, which resulted in a maximum output power of 1.6 W and a slope efficiency of 34.4% at 1030 nm.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2015
·
IF 2.947
Le Zhang,Hao Yang,Xuebin Qiao,Tianyuan Zhou,Zhongying Wang,Jian Zhang,Dingyuan Tang,Deyuan Shen,Qitu Zhang
Spray drying parameters have been systematically optimized to granulate a stoichiometric mixture of commercial oxides for YAG transparent ceramics. The processing parameters and suspension composition were changed in sequence and SEM analysis , EDS , MIP and transmittance measurements, were used to choose the best spray drying parameters. The optimized inlet and outlet temperatures of drying medium were 75 and 60 °C, and its flux and aspiration rate were 25 Hz and 30 Hz, respectively. The balanced suspension composition were: solid content 45 wt.%, binder PVB 1.0 wt.%, dispersant DS005 0.50 wt.% and the atomizer rotating speed 8000 r/min. The granulated particles exhibited excellent forming performance with mono-dispersed, spherical and fully dense aggregates, and mean size was ∼40 μm. They could be crushed under 40 MPa. The homogeneous distribution and microstructure of ceramics assured the high optical quality of YAG ceramics.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
INFRARED PHYSICS & TECHNOLOGY
·
2021
·
IF 2.638
Yuxin Pan,Hui Lin,Ruijin Hong,Dawei Zhang,Haojie Sun
A series of Yb 3+ , Ho 3+ , Ce 3+ :YAG ceramics have been sintered at 1780 °C by high temperature solid state reaction under oxygen atmosphere. The absorption spectra , fluorescence spectra and fluorescence decay curve were discussed. The Judd-Ofelt (J-O) theory was applied to obtain the values of Ω 2 = 13.95 × 10 −20 cm 2 , Ω 4 = 3.94 × 10 −20 cm 2 and Ω 6 = 0.87 × 10 −20 cm 2 , respectively. After doping the Ce 3+ ions, the σ em of Yb 3+ , Ho 3+ , Ce 3+ :YAG ceramic at 2094 nm increased from 5.67 × 10 −20 cm 2 to 7.26 × 10 −20 cm 2 . These results demonstrate that Yb 3+ , Ho 3+ , Ce 3+ :YAG ceramic could be promising for 2 μm region.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2018
·Vol. 48
·期 1
·374-385
·
IF 1.566
Tong Huanzhe,Wang Nengli,Zou Yuqi,Zhang Zhaoquan,Fan Wugang,Shou Jinxiang,Zhang Xiyan
Yttrium aluminum garnet (Y 3 Al 5 O 12 , YAG) ceramics with a relative density of about 99.5% were fabricated by solid-state reaction and pressureless sintering using commercial α-Al 2 O 3 and Y 2 O 3 powders as raw materials in air. The effect of different sintering additives, e.g. tetraethyl orthosilicate (TEOS), MgO and TEOS + MgO, on the relative density and mechanical properties of the YAG ceramic samples were investigated. When the dopant content of TEOS exceeded 0.5 wt.%, a sudden grain growth appeared, as well as a residual second phase located in triangle grain boundary. MgO was more effective as a sintering additive than silica in promoting the densification of the YAG ceramics. The relative density of the ceramics gradually decreased with the increase of MgO doping content and fixed TEOS content. The mechanical properties of the YAG ceramics fabricated by pressureless sintering in air at 1600–1710°C were tested. The fracture surface morphology of the MgO-doped ceramic samples was mainly transgranular, whereas the TEOS-doped samples were mainly intergranular.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Haohao Ji,Mengmeng Xie,Yu Liu,Nianjiang Chen,Shiwei Wang,Dianzi Liu,Wenlan Gao,Haoran Wang,Yanhao Dong,Jian Zhang
The application of 3D printed transparent composite ceramics with designable gain profile in solid-state lasers has garnered increasing interest. Problems including the poor performance of slurries, defects generated in the green bodies during printing and the uncontrolled densification process between ceramics with different components have deteriorated the optical quality of transparent composite ceramics prepared by direct ink writing (DIW), leading to the limitations on the realization of high-power laser outputs. To solve this problem, a systematic investigation of Nd: YAG transparent composite ceramics was conducted throughout the fabrication process, including DIW with the capability of dual-material switching, vacuum sintering and hot isostatic pressing (HIP). First, the ceramic slurries with good printability and high solids loading were formulated by adjusting the dispersant and thickener contents. The sintering behaviors of undoped YAG and Nd: YAG ceramics were investigated to enhance the optical quality of transparent composite ceramics. The Nd ions diffusion distances of the interface between undoped YAG and Nd: YAG regions in the vertical and horizontal composite ceramics were tested and calculated to be 50.1 μm and 43.5 μm, respectively. Finally, the laser measurement of the YAG/0.3 at. % Nd: YAG/YAG transparent composite ceramic with the dimension of 3 × 3 × 4 mm 3 indicated that the maximum output power of 2.15 W with the slope efficiency of 40.2 % was achieved at the absorbed pump power of 5.70 W.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yongshuai Xie,Ying Peng,Dehua Ma,Wei Liu,Zhezhe Deng,Luyi Zhu,Guanghui Zhang,Xinqiang Wang
Lightweight and flexible thermal insulation materials have gradually become a research focus. In this work, the flexible YAG fibrous membrane which can be folded in half after heat treatment at 1200 °C for 2 h was prepared. The crystallization process , mechanical properties , and thermal insulation properties of the YAG fibrous membrane were studied. The as-prepared YAG fibrous membrane has no mesophase formation during the crystallization process, and its tensile strength was 2.43 MPa. The self-supporting effect of single fibers made YAG fibrous membrane had ultra-high porosity. Its density was 27.34 mg/cm 3 , which made it have thermal insulation performance comparable to aerogel . When the hot surface is 1200 °C, a 10 mm thick YAG fibrous membrane can stabilize the temperature of the cold surface at 320 °C. The YAG fibrous membrane is expected to be used as a new generation of lightweight, high strength, flexible, and high-efficiency thermal insulation materials for extremely high temperature conditions.
研究领域:
材料科学
·
热能工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Pan Gao,Le Zhang,Qing Yao,Cen Shao,Shuai Wei,Tianyuan Zhou,Hao Chen,Hao Yang
Aqueous gelcasting has been applied to form multiple advanced ceramics with large size or complex shape. However, the optical performance of transparent ceramics fabricated by gelcasting is not satisfactory due to the microstructure defects and residual organics. YAG ceramics with excellent optical transmittance were prepared through improving solid content of suspension, obtaining fine microstructure of fully dense ceramics without residual organics in this paper. The effects of ammonium citrate tribasic (TAC) and solid content on the rheological performance of suspension as well as the effect of solid content on the microstructure of green body were systematically investigated. The viscosity of suspension with 43 vol% solid content and 0.25 wt% TAC was as low as 0.03 Pa s at 100 s −1 . The YAG ceramics (thickness 2.5 mm) with high optical transmittance (T = 83.2% at 1064 nm) were prepared from 43 vol% after vacuum sintering at 1780 °C for 8 h. The green body cast from 45 vol% solid content had an excellent bending strength about 29 MPa, and the residual pores were eliminated after vacuum sintering, while the residual organics was detected by optical microscopy and elemental analyzer inside YAG ceramics. The residual organics results in the decrease of in-line transmittance of YAG ceramic cast from 45 vol% solid content than that of ceramic cast from 43 vol%. This study suggests a promising prospect for AM gelling system in the cost-efficient manufacturing of highly transparent ceramics with high bending strength of green bodies.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2015
·
IF 2.605
Xiaorong Zhang,Xiaochuan Wang,Ping Fu,Wenzhong Lu
YAG ceramics with good dielectric properties were prepared via a modified pyrolysis method, with yttrium nitrate as the yttrium source and combined aluminium sulphate and aluminium nitrate as aluminium sources, and subsequent sintering in a muffle furnace. The effects of the different aluminium sources on the powder characteristic and the impact of sintering temperature , sintering aids (TEOS) and additive (TiO 2 ) on the dielectric properties of the ceramics were studied. The results show that well-dispersed pure YAG nano-powders can be obtained after calcination at 1000 °C with an aluminium sulphate and aluminium nitrate molar ratio of 1.5:2. The relative density, permittivity ( ε r ) and quality factor ( Q × f ) of the YAG ceramics increase with sintering temperature and TEOS addition. TiO 2 can greatly promote τ f to near-zero but decreases Q × f . The relative density, ε r , Q × f and τ f of the YAG–1 wt% TEOS–1 wt% TiO 2 ceramic obtained at 1520 °C are 97.6%, 9.9, 71, 738 GHz and −30 ppm/°C, respectively.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 5
·1081
·
IF 3.2
Xuezhuan Yi,Qinglin Sai,Yanna Tian,Renjie Jiang,Mingqin Li
This paper demonstrates the application of eutectic welding to Ce3+:YAG transparent ceramics for reliable detection and imaging of UV emission, particularly focusing on demanding conditions, such as high repetition rate, high energy, and high vacuum. A series of Ce3+:YAG transparent ceramics with different Ce3+doping concentrations (0.1 at%, 0.3 at%, 0.5 at%, and 1.0 at%) were prepared via vacuum sintering. Their crystal microstructure, luminescence properties, transmittance, and fluorescence lifetime were studied. It was found that the optimal Ce3+doping concentration is 0.3 at%. The measured ultraviolet-to-visible energy conversion efficiency of the 0.3 at% Ce3+:YAG transparent ceramics with a thickness of 1.0 mm is 3.9%. Compared with silicone encapsulated Ce3+:YAG transparent ceramic samples, the eutectic-soldered samples exhibited excellent resistance to temperature quenching of the luminescence, which indicates that eutectic welding can effectively improve the fluorescence performance of Ce3+:YAG transparent ceramics for the application of deep ultraviolet light detection.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）