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Method for improving transmittance of high-Cr-doping-concentration YAG transparent ceramic material

A technology of transparent ceramics and doping concentration, which is applied in the field of improving the transmittance of YAG transparent ceramic materials with high Cr doping concentration, and can solve the problems of reducing the transmittance of transparent ceramics

Pending Publication Date: 2021-06-29
苏州璋驰光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the concentration of Cr is high, since the segregation coefficient of Cr ions in the YAG lattice is only 0.18, Cr ions will precipitate on the grain boundaries, reducing the transmittance of transparent ceramics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment provides a method for improving the transmittance of YAG transparent ceramic material with high Cr doping concentration, which specifically includes the following steps:

[0018] 1. Using Gd 2 o 3 replace Y 2 o 3 (The chemical composition formula of the material is: Cr 0.18 :(Y 0.5 Gd 0.5 ) 2.82 al 2 al 3 o 12 ) method; the amount of substitution is 50at%.

[0019] 2. Preparation of Cr by sol-gel method 0.18 : (Y, Gd) 2.82 (Al, Sc, Ga) 2 (Al, Ga) 3 o 12 ceramic powder;

[0020] 3. Carry out molding, and obtain Cr through demoulding, cold isostatic pressing, bisque firing, vacuum sintering + hot isostatic pressing sintering 0.18 : (Y, Gd) 2.82 (Al, Sc, Ga) 2 (Al, Ga) 3 o 12 transparent ceramics.

Embodiment 2

[0022] This embodiment provides a method for preparing a Q-switched laser composite structure laser ceramic, which specifically includes the following steps:

[0023] 1. Using Ga 2 o 3 replace Al 2 o 3 (The chemical composition formula of the material is: Cr 0.18 : Y 2.82 al 2。5 Ga 2.5 o 12 ) method; the amount of substitution is 50at%.

[0024] 2. Preparation of Cr by sol-gel method 0.18 : Y 2.82 al 2。5 Ga 2.5 o 12 ceramic powder;

[0025] 3. Carry out molding, and obtain Cr through demoulding, cold isostatic pressing, bisque firing, vacuum sintering + hot isostatic pressing sintering 0.18 : Y 2.82 al 2。5 Ga 2.5 o 12 transparent ceramics.

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Abstract

The invention discloses a method for improving the transmittance of a high-Cr-doping-concentration YAG transparent ceramic material. The segregation coefficient of Cr is increased and the transmittance of the high-Cr-doping-concentration YAG transparent ceramic material is improved by increasing the concentration of ions with the atomic radius larger than Y in the high-Cr-doping-concentration YAG transparent ceramic material to increase the lattice constant.

Description

technical field [0001] The invention relates to a method for improving the transmittance of YAG transparent ceramic material with high Cr doping concentration; specifically, increasing the concentration of ions whose atomic radius is greater than Y in the YAG transparent ceramic material with high Cr doping concentration. Background technique [0002] Q-switching technology, also known as Q-switching technology, is a technology that compresses the generally output continuous laser energy into extremely narrow pulses for emission, so that the peak power of the light source can be increased by several orders of magnitude. [0003] The existing Q-switching technical solutions mainly use Nd:YAG and Cr:YAG bonded laser crystals (neodymium-doped YAG is used for the gain medium, and chromium-doped YAG is used for the Q switch). Low cost, poor stability, high processing costs and other shortcomings, it is difficult to meet the rapid development requirements of lidar technology. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/50C04B35/622C04B35/624C04B35/645
CPCC04B35/50C04B35/622C04B35/624C04B35/6455C04B2235/3224C04B2235/3217C04B2235/3286C04B2235/602C04B2235/9653
Inventor 冯涛
Owner 苏州璋驰光电科技有限公司