Neodymium-doped strontium fluoride laser transparent ceramic and preparation method thereof

A laser transparent and strontium fluoride technology, applied in the research field of advanced photofunctional transparent ceramics, to achieve the effects of enhancing fluorescence emission intensity, preventing the formation of hydrogen bonds, and preventing hard agglomeration

Inactive Publication Date: 2016-09-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to some insurmountable shortcomings of laser crystals, material scientists have been exploring new solid-state laser materials

Method used

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  • Neodymium-doped strontium fluoride laser transparent ceramic and preparation method thereof
  • Neodymium-doped strontium fluoride laser transparent ceramic and preparation method thereof
  • Neodymium-doped strontium fluoride laser transparent ceramic and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A neodymium-strontium-doped calcium fluoride laser ceramic, the preparation method of which comprises the following steps:

[0041] 1) Weigh 0.0796molSr(NO 3 ) 2 4H 2 O, 0.0042molNd(NO 3 ) 3 ·6H 2 O was dissolved in 80ml water and stirred with a magnetic stirrer to prepare a cationic mixture; weigh 0.175molKF·2H 2 O was dissolved in 100ml water and stirred with a magnetic stirrer to prepare anion solution;

[0042] 2) will be dissolved with F - The anion solution of the dissolved Sr was dropped dropwise at a speed of 90ml / min 2+ and Nd 3+ After the titration is completed, stir with a magnetic stirrer for 30 minutes to make it fully react, and the resulting product appears to be stratified after standing for 7 hours, and the precipitate sinks to the bottom (the red wet gel is Nd in the lower layer. 3+ :SrF 2 , that is the desired product, the following examples are the same);

[0043] 3) The product obtained in step 2) was ultrasonically cleaned, and centrifug...

Embodiment 2

[0051] A neodymium-strontium-doped calcium fluoride laser ceramic, the preparation method of which comprises the following steps:

[0052] 1) Weigh 0.0637molSr(NO3 ) 2 4H 2 O, 0.0033molNd(NO 3 ) 3 ·6H 2 O was dissolved in 80ml water and stirred with a magnetic stirrer to prepare a cationic mixture; weigh 0.0764molKF·2H 2 O was dissolved in 100ml water and stirred with a magnetic stirrer to prepare anion solution;

[0053] 2) will be dissolved with F - The anion solution of the dissolved Sr was dropped dropwise at a speed of 80ml / min 2+ and Nd 3+ In the cationic solution, after the titration is completed, stir with a magnetic stirrer for 30 minutes to make it fully react, and the resulting product appears to be stratified after standing for 6 hours, and the precipitate sinks to the bottom;

[0054] 3) The product obtained in step 2) was ultrasonically cleaned, and centrifuged (15min, 4 times) under the condition of 11000r / min with a TG16-WS desktop high-speed centrifuge...

Embodiment 3

[0062] A neodymium-doped strontium fluoride laser transparent ceramic, the preparation method of which comprises the following steps:

[0063] 1) Weigh 0.0398molSr(NO 3 ) 2 4H 2 O, 0.0020molNd(NO 3 ) 3 ·6H 2 O was dissolved in 80ml water and stirred with a magnetic stirrer to prepare a cationic mixture; weigh 0.0520molKF·2H 2 O was dissolved in 100ml water and stirred with a magnetic stirrer to prepare anion solution;

[0064] 2) will be dissolved with F - The anion solution of the dissolved Sr was dropped dropwise at a speed of 70ml / min 2+ 、Nd 3+ In the cation solution, after the titration is completed, stir with a magnetic stirrer for 30 minutes to make it fully react, and the resulting product appears to be stratified after standing for 5 hours, and the precipitate sinks to the bottom;

[0065] 3) The product obtained in step 2) was ultrasonically cleaned, and centrifuged (15min, 4 times) under the condition of 11000r / min with a TG16-WS desktop high-speed centrifug...

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Abstract

The invention relates to a neodymium-doped strontium fluoride laser transparent ceramic. According to the invention, neodymium ions and a strontium fluoride matrix undergo a chemical reaction to form a displacement solid solution, and hot-pressing sintering, post-treatment and other operations are carried out so as to obtain the laser transparent ceramic with a density approximate to 99.8%. A preparation method for the laser transparent ceramic comprises the following steps: preparing Nd<3+>: SrF2 nanometer powder by using an azeotropic distillation process and then carrying out azeotropic distillation with n-butanol as an entrainer to maximally remove moisture in gel, wherein obtained powder is not prone to agglomeration, has uniform particle size distribution, and has a grain size of 15 to 30 nm; and preparing the laser transparent ceramic by using vacuum hot-pressing sintering technology with LiF as a sintering aid. The prepared laser transparent ceramic has maximum transmittance of 85.83% in visible and near-infrared wave bands and has strong absorption peaks at 576 nm, 735 nm and 796 nm. The preparation method is simple, suitable for large-scale production and low in cost; and the prepared laser transparent ceramic has good optical homogeneity.

Description

technical field [0001] The invention belongs to the research field of advanced optical functional transparent ceramics, and specifically relates to a neodymium-doped strontium fluoride laser transparent ceramic and a preparation method thereof. Background technique [0002] Since Maiman developed the first ruby ​​solid-state laser in 1960 (reference Maiman T H.Optical andmicrowave-optical experiments in ruby.Phys.Rev.Lett.,1960,4(11):564-566), solid-state laser technology has been rapid develop. Among all solid-state laser materials, YAG crystal has the best overall performance. However, due to some insurmountable shortcomings of laser crystals, material scientists have been exploring new solid-state laser materials. In 1964, Hatch (reference HatchS E, Parsons W F, Weagley R J.Hot pressed polycrystalline CaF 2 : Dy 2+ laser.Appl.Phys.Lett., 1964,5(8):153-154) with DyF 3 and CaF 3 The powder is used as raw material, which is melted in vacuum and crushed into a powder wi...

Claims

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Application Information

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IPC IPC(8): C04B35/553C04B35/624C04B35/64C04B35/645
CPCC04B35/553C04B35/624C04B35/64C04B35/645C04B2235/3224C04B2235/5454C04B2235/9653
Inventor 宋京红房亚华梅炳初朱春辉张紫微周志伟
Owner WUHAN UNIV OF TECH
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