| Yttrium aluminum garnet (YAG) due to its excellent optical performance andmechanical strength and become a widely used class of optical materials. Therefore,the development YAG optical materials in the scientific community, business, medicaland military circles were of great concern. Polycrystalline and single crystal YAG intotwo forms, wherein the polycrystalline ceramic material compared with YAG singlecrystal, the high doping concentration, an isotropic coefficient of thermal expansion,low cost, easy to implement short preparation period and a large size etc., so you canbe prepared with high transparency, high thermal conductivity, high power lasertransparent ceramic materials, is a promising fine structure of functional ceramicmaterials.In this paper，1.0at%transparent Nd:YAG ceramic which is sintered in vacuumwas fabricated by a solid-state reaction method using high-purity and high dispersionas starting materials. Then, the samples were characterized by SEM and UV-visiblespectrometer. In this thesis:①through improved technology, the powder in air aftercalcined at different temperatures, reaction sintering products. Experiments show thatselecting the appropriate calcination temperature of1400℃, can effectively improvethe Nd: YAG ceramic transmittance.②transparent ceramic sintering additives on silica (SiO2), tetraethyl orthosilicate(TEOS) is added and the addition of the way for a detailed analysis. By comparison ofseveral experimental and theoretical studies, found that magnesium oxide (MgO) onthe basis of the same amount, when properly silica (SiO2) and tetraethyl orthosilicate(TEOS) is added when the proportion, the resulting sintered Nd: YAG transparentceramics with good microcrystalline structure,the maximum transmittance at awavelength λ=1064nm Department, can reach62%. |
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