Active ion controlled doping yttrium aluminum garnet base laser transparent ceramic material and preparation method thereof

A technology of yttrium aluminum garnet and activated ions is applied in the field of transparent ceramic preparation, which can solve the problems of aggravating lattice distortion, affecting the optical quality of ceramic materials, and not being developed.

Active Publication Date: 2012-01-11
中国科学院上海硅酸盐研究所苏州研究院
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  • Abstract
  • Description
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Problems solved by technology

Double-doped Cr, Nd:YAG and Cr, Yb:YAG transparent ceramics prepared by traditional solid-state reaction can be used as self-Q-switching laser gain media, however, Cr and Nd ions (or Cr and Yb ions) enter the yttrium aluminum pomegranate at the same time YAG (YAG) unit cells severely aggravate the lattice distortion, thereby affect

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  • Active ion controlled doping yttrium aluminum garnet base laser transparent ceramic material and preparation method thereof
  • Active ion controlled doping yttrium aluminum garnet base laser transparent ceramic material and preparation method thereof
  • Active ion controlled doping yttrium aluminum garnet base laser transparent ceramic material and preparation method thereof

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preparation example Construction

[0030] In the first aspect of the present invention, a method for preparing yttrium-aluminum-garnet-based laser-transparent ceramic materials with controlled doping of activated ions is provided, specifically, a controlled doping of Cr, Nd or Cr, Yb is provided. The preparation method of miscellaneous YAG transparent ceramics, this method comprises the following steps:

[0031] (i) Raw material selection:

[0032] The raw material can be:

[0033] (a) High-purity α-Al 2 o 3 , Y 2 o 3 、Cr 2 o 3 、Nd 2 o 3 (or Yb 2 o 3 ) powder;

[0034] (b) High-purity Cr:YAG, Nd:YAG (or Yb:YAG) powder;

[0035] (ii) Selection of sintering aids:

[0036] The sintering aid can be LiF, NaF, MgF 2 , CaF 2 , AlF 3 , Li 2 O, Na 2 O, K 2 O, CaO, MgO, B 2 o 3 , Ga 2 o 3 、Sc 2 o 3 , La 2 o 3 , SiO 2 , silica gel, TEOS (orthoethyl silicate), and the addition of the sintering aid is 10 2 -10 6 ppm;

[0037] Wherein, the purity of the above-mentioned commercial raw materials ...

Embodiment 1

[0052] Prepare two ethanol-based slurries with different compositions: (1) 25.3629g of α-Al with an average particle size of 300nm 2 o 3 Powder, 33.5328g of Y with an average particle size of about 3μm 2 o 3 Powder, 0.1900g of Cr with an average particle size of about 1μm 2 o 3 Put the powder and 0.3565g tetraethyl orthosilicate (TEOS) into a ball mill jar equipped with 200g high-purity alumina balls, add 34ml of absolute ethanol, and then ball mill and mix for 10 hours to obtain ceramic slurry "a"; (2 ) 25.4904g of α-Al with an average particle size of 300nm 2 o 3 Powder, 33.8715g of Y with an average particle size of about 3μm 2 o 3 Powder, 0.5047g of Nd with an average particle size of about 250nm 2 o 3 Put the powder and 0.3869g tetraethyl orthosilicate (TEOS) into a ball mill jar equipped with 200g high-purity alumina balls, add 34ml of absolute ethanol, and then ball mill and mix for 10 hours to obtain ceramic slurry "b". The two slurries were dried in an oven ...

Embodiment 2

[0054] Prepare two kinds of ethanol-based slurries with different compositions: (1) 25.2355g of α-Al with an average particle size of 300nm 2 o 3 Powder, 33.8715g of Y with an average particle size of about 3μm 2 o 3 Powder, 0.3800g of Cr with an average particle size of about 1μm 2 o 3 Put the powder and 0.3272g tetraethyl orthosilicate (TEOS) into a ball mill jar equipped with 200g high-purity alumina balls, add 35ml of absolute ethanol, and then ball mill and mix for 10 hours to obtain ceramic slurry "c"; (2 ) 25.4904g of α-Al with an average particle size of 300nm 2 o 3Powder, 33.1955g of Y with an average particle size of about 3μm 2 o 3 Powder, 1.0094g of Nd with an average particle size of about 250nm 2 o 3 Put the powder and 0.3582g tetraethyl orthosilicate (TEOS) into a ball mill jar equipped with 200g high-purity alumina balls, add 35ml of absolute ethanol, and then ball mill and mix for 10 hours to obtain ceramic slurry "d". The two slurries were dried in ...

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Abstract

The invention relates to an active ion controlled doping yttrium aluminum garnet base laser transparent ceramic material and a preparation method thereof. The method comprises the following steps of: (1) carrying out ball mill mixing on oxide ceramic powder body raw materials, sintering auxiliary agents, binding agents and absolute ethyl alcohol to prepare ethyl alcohol base slurry, wherein the slurry comprises the following ingredients through being metered by mass: 40 to 70 percent of oxide ceramic powder body raw materials, 0.01 to 1 percent of sintering auxiliary agents, 0 to 2.5 percent of binding agents and the balance absolute ethyl alcohol; (2) drying the ethyl alcohol base slurry prepared in the first step, then, carrying out sieving and granulation, or carrying out direct spray granulation on the slurry; (3) loading powder body spherical particles prepared in the second step through granulation into clean bags filled with air and uniformly mixing the powder body spherical particles; (4) directly pressing and forming the powder body spherical particles uniformly mixed in the third step or carrying out the pressing forming after the pre-calcination treatment; and (5) carrying out vacuum sintering on ceramic blanks prepared in the fourth step through pressing and forming, then, carrying out annealing and mechanical processing treatment and obtaining the active ion controlled doping yttrium aluminum garnet base laser transparent ceramic material.

Description

technical field [0001] The invention belongs to the technical field of preparation of transparent ceramics, and provides a method for preparing yttrium aluminum garnet-based laser transparent ceramic materials with controlled doping of activated ions (specifically Cr, Nd, or Cr, Yb), and the preparation method Controlled doping of activating ions in yttrium aluminum garnet-based laser-transparent ceramic materials. Background technique [0002] Passively Q-switched lasers pumped by laser diodes (LD) have the characteristics of high efficiency, high peak power, high average power, high repetition rate and short pulses, so they are widely used in radar, laser ranging, remote sensing, pollution monitoring, nonlinear Optical processing, material processing and other fields. Nd:YAG and Yb:YAG crystals have excellent mechanical, optical, and chemical thermal stability, and can be used as gain media for passive Q-switching of LD pumps. Cr 4+ :YAG crystal is an ideal material for...

Claims

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Application Information

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IPC IPC(8): C04B35/01C04B35/622
Inventor 李江潘裕柏刘文斌张文馨周军姜本学王亮寇华敏沈毅强石云郭景坤
Owner 中国科学院上海硅酸盐研究所苏州研究院
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