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Method for preparing Er-Yb double-doped YAG (Yttrium-Aluminum Garnet) polycrystalline transparent ceramic material

A ceramic material, polycrystalline and transparent technology is applied in the field of preparation of high-transparency Er and Yb double-doped YAG polycrystalline transparent ceramic materials, and achieves the effects of wide source of raw materials, simple preparation process and equipment, and easy control.

Inactive Publication Date: 2011-10-12
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Er, Yb:YAG transparent ceramics with a transmittance greater than 80% have not been reported

Method used

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  • Method for preparing Er-Yb double-doped YAG (Yttrium-Aluminum Garnet) polycrystalline transparent ceramic material
  • Method for preparing Er-Yb double-doped YAG (Yttrium-Aluminum Garnet) polycrystalline transparent ceramic material
  • Method for preparing Er-Yb double-doped YAG (Yttrium-Aluminum Garnet) polycrystalline transparent ceramic material

Examples

Experimental program
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Effect test

Embodiment 1～4

[0024] Such as figure 1 The process flow shown, the erbium oxide powder Er 2 o 3 , ytterbium oxide powder Yb 2 o 3 , Yttrium oxide powder Y 2 o 3 and alumina powder Al 2 o 3 Weigh according to the mass required to prepare 60g of 1at%Er, 5at%Yb:YAG, 1at%Er, 10at%Yb:YAG, 1at%Er, 15at%Yb:YAG, 1at%Er, 20at%Yb:YAG , respectively added 30ml of absolute ethanol and 0.48g of tetraethyl orthosilicate, and put them together into an alumina tank for ball milling, the ball-to-material ratio was 3:1, the ball milling time was 10h, and the ball mill speed was 120rpm. After ball milling, put the slurry into a drying oven and dry it at 80°C. After the dried slurry is sieved, it is calcined in a muffle furnace at 600°C for 2h. The powder is pressed into a disc shape by axial pressing, and the pre-pressed disc is cold isostatically pressed at 250MPa, and kept in a vacuum sintering furnace at 1800°C for 25h (vacuum degree greater than 10 -3 Pa), and then annealed at 1500°C for 20h in a ...

Embodiment 5

[0026] Such as figure 1 The process flow shown, the erbium oxide powder Er 2 o 3 , ytterbium oxide powder Yb 2 o 3 , Yttrium oxide powder Y 2 o 3 and alumina powder Al 2 o 3Weigh according to the mass required for the preparation of 60g of 1% Er, 25% Yb:YAG, add 29ml of absolute ethanol and 0.5g of tetraethyl orthosilicate, and put them together into an alumina tank for ball milling, the ball-to-material ratio is 3:1, The ball milling time was 11 hours, and the rotational speed of the ball mill was 110 rpm. After ball milling, the slurry was put into a drying oven to dry at 70°C, and the dried slurry was sieved and calcined in a muffle furnace at 700°C for 2h. The powder is pressed into a disc shape by axial pressure, and the pre-pressed disc is cold isostatic pressed at 220MPa, and kept in a vacuum sintering furnace at 1820°C for 20h (vacuum degree greater than 10 -3 Pa), and then annealed at 1550°C for 16h in a muffle furnace. The sintered Er, Yb:YAG ceramics are p...

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Abstract

The invention relates to an erbium-ytterbium double-doped yttrium-aluminum garnet (Er,Yb:YAG) transparent ceramic material with high light transmittance and a preparation method thereof. The ceramic material is characterized by consisting of EraYbbY(3-a-b)Al5O12, wherein a is more than or equal to 0.015 and less than or equal to 0.6, and b is more than or equal to 0.03 and less than or equal to 1.5, that is to say, the doping concentration of Er ions is 0.5-20 at percent, and the doping concentration of Yb ions is 1-50 at percent. The preparation method comprises the following two procedures of: (1) weighing Er2O3 powder, Yb2O3 powder, Y2O3 powder and Al2O3 powder according to needed doping concentrations, performing ball milling on all powder with absolute ethyl alcohol, aluminum oxide grinding balls and a TEOS (Tetraethyl Orthosilicate) sintering aid for mixing, drying, screening and calcining an obtained sizing agent to remove organic residues, and molding to obtain a biscuit; and (2) performing vacuum sintering on the obtained biscuit, wherein the prepared material with the thickness over 2 millimeters has linear light transmission rate over 80 percent in visible and infrared wavebands, which is equivalent to that of a correspondingly constituted crystal.

Description

technical field [0001] The invention relates to a method for preparing a highly transparent Er and Yb double-doped YAG (Er, Yb:YAG) polycrystalline transparent ceramic material, which belongs to the technical field of optical ceramic material preparation. Background technique [0002] The laser in the 1.5-1.65μm band is the atmospheric transmission window, and it is a safe wavelength for human eyes, which is not easy to damage the retina. It can be used in measurement, communication, remote sensing and other fields, such as rangefinders. [0003] Er 3+ in ions 4 I 13 / 2 State and 4 I 15 / 2 The transition between the ground state energy levels can achieve a laser output of 1.5-1.65 μm. but 3+ Its own three-level characteristics and small absorption coefficient for pumping light lead to Er 3+ The laser output efficiency of ions is very low. In order to improve the absorption coefficient of the pumping source and the laser output efficiency of the material, the Er 3+ A m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/505
Inventor 周军潘裕柏张文馨王亮寇华敏石云刘文斌李江姜本学郭景坤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI