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Self-stimulated emission absorbing material and preparation method thereof

A radiation absorption and self-excitation technology, applied in the field of laser materials, can solve problems such as small absorption coefficient

Active Publication Date: 2015-07-01
北京雷生强式科技有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the absorption coefficient of Sm:YAG single crystal and Sm:YAG transparent ceramics at 1064nm wavelength is small in the prior art, the embodiment of the present invention provides a self-excited radiation absorbing material and its preparation method

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  • Self-stimulated emission absorbing material and preparation method thereof
  • Self-stimulated emission absorbing material and preparation method thereof
  • Self-stimulated emission absorbing material and preparation method thereof

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Embodiment 1

[0050] An embodiment of the present invention provides a self-excited radiation absorbing material. The chemical formula of the self-excited radiation absorbing material is: Y 3-x-y-z SM x sc y Lu z Al 5 o 12 , wherein, 0<x≤0.215, 0.03≤y≤0.3, 0.03≤z≤0.9.

[0051] In the self-excited radiation absorbing material provided by the embodiments of the present invention, the ionic radius ratio Y 3+ Sc with smaller ionic radius 3+ Ion and Lu 3+ Ions replace part of Y in Sm:YAG lattice 3+ ions to form a new samarium-yttrium-lutetium-scandium-aluminum-garnet (hereinafter referred to as: Sm:YLSAG) material with a smaller lattice constant than Sm:YAG. Compared with Sm:YAG, the absorption peak of Sm:YLSAG at around 1068nm will be blue-shifted to around 1065.8nm. Therefore, the absorption peak of Sm:YLSAG matches the stray fluorescence peak of Nd:YAG (Neodymium-doped Yttrium Aluminum Garnet) working medium better, so that the absorption coefficient of Sm:YLSAG at 1064nm wavelength ...

Embodiment 2

[0064] An embodiment of the present invention provides a method for preparing a self-excited radiation absorbing material, the method comprising:

[0065] Step 1: Prepare the rare earth mineral acid salt solution containing Y, Sm, Sc and Lu, and the solution containing Al 2 o 3 Alcohol-water mixed solution of powder, precipitant and electrostatic stabilizer, according to chemical formula: Y 3-x-y-z SM x sc y Lu z al 5 o 12 (02 o 3 the quality of;

[0066] Step 2: Add the rare earth mineral acid salt solution containing Y, Sm, Sc and Lu dropwise to the 2 o 3 powder, precipitant and electrostatic stabilizer in alcohol-water mixed suspension, and adjust the pH value of the reaction system between 7.0-8.5;

[0067] Step 3: After the titration is completed, the reaction system is aged and separated to obtain a precipitate, and the precipitate is washed, dried, ground and calcined to obtain a nanoscale powder;

[0068] Step 4: Composing the nanoscale powder, grinding ball...

Embodiment 3

[0094] According to chemical formula Y 2.1 SM 0.15 sc 0.15 Lu 0.6 al 5 o 12 The ratio of the number of atoms of each element is calculated to obtain the mass of the following oxide raw materials required for the preparation of 40g Sm:YLSAG ceramic powder, and the Y with a purity of 99.99% is weighed with a balance 2 o 3 Powder 14.6384g, Lu with a purity of 99.99% 2 o 3 Powder 7.3704g, purity 99.99% Sc 2 o 3 Powder 0.6386g, Sm with a purity of 99.99% 2 o 3 Powder 1.6151g, Al with a purity of 99.99% 2 o 3 Powder 15.7375g. Will Y 2 o 3 、Lu 2 o 3 、Sc 2 o 3 and Sm 2 o 3 The powder is mixed, dissolved in high-grade pure concentrated nitric acid, and prepared with deionized water so that the total molar concentration of rare earth ions is 0.5mol L -1 Rare earth nitrate mixed solution.

[0095] Take by weighing 147.19g purity and be better than the ammonium bicarbonate of 99.9%, ammonium bicarbonate and the Al 2 o 3 The powder is dissolved together in a mixed ...

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Abstract

The invention discloses a self-stimulated emission absorbing material, which belongs to the field of laser materials. The chemical formula of the self-stimulated emission absorbing material is Y3-x-y-zSmxScyLuzAl5O12, wherein x is more than 0 and no more than 0.215, y is no less than 0.03 and no more than 0.3, and z is no less than 0.03 and no more than 0.9. According to the invention, Sc<3+> and Lu<3+> ions with radii smaller than the radius of a Y<3+> ion are used to substitute a part of Y<3+> ions in Sm: YAG, so a novel Sm: YLSAG material is formed; the absorption peak of the novel Sm: YLSAG material at about 1068 nm blueshifts to 1065.8 nm, so the novel Sm: YLSAG material has a great absorption coefficient at a wave length of 1064 nm. Moreover, the invention further provides a preparation method for the self-stimulated emission absorbing material. The preparation method comprises the following steps: adding a rare earth inorganic acid salt solution containing Y, Sm, Sc and Lu into an alcohol-water mixed suspension containing Al2O3 powder, a precipitating agent and a static stabilizing agent drop by drop; carrying out a chemical co-precipitation reaction so as to obtain a precipitate; and subjecting the precipitate to solid-phase reaction sintering so as to prepare the Sm: YLSAG material. According to the invention, chemical co-precipitation and solid-phase reaction sintering are combined together, and the method is simple and easily controllable, has good repeatability and stability and is applicable to large-scale industrial production.

Description

technical field [0001] The invention relates to the field of laser materials, in particular to a self-excited radiation absorbing material and a preparation method thereof. Background technique [0002] Neodymium-doped Yttrium Aluminum Garnet (Neodymium-doped Yttrium Aluminum Garnet: hereinafter referred to as Nd:YAG) solid-state laser is a laser with Nd:YAG crystal (or ceramic) as the working medium, which has high conversion efficiency, high output power, With many technical advantages such as good beam quality, compact structure, and light weight, it is widely used in national defense, industrial processing, communication, and medical fields. However, under the condition of high-power laser operation, the 1064nm stray fluorescence formed by the self-excited emission inside the Nd:YAG crystal will undergo self-excited emission oscillation, forming the self-excited emission amplification (Amplification by Self-stimulated Emission: ASE) effect, the fluorescence The ASE effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/44C04B35/622
Inventor 李兴旺张月娟莫小刚夏士兴杜秀红朱建慧李洪峰王军杰王永国高学喜
Owner 北京雷生强式科技有限责任公司