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Planar waveguide structure laser ceramic material and preparation method thereof

A technology of laser ceramics and slab waveguides, which is applied in the direction of lasers, laser components, and the structure/shape of active media, can solve the problems of high difficulty in processing micron-level core layers, complex preparation processes, and expensive special equipment, etc., to facilitate industrialization Large-scale production, increased laser power, and low manufacturing cost

Inactive Publication Date: 2015-10-28
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One type is mainly epitaxial growth technology, including liquid phase epitaxy technology, molecular beam epitaxy technology and pulsed laser deposition technology, etc. Their common feature is that they need expensive special equipment and complicated preparation process, and can only make the lattice constant close to materials combined
The other is the technology of changing the chemical composition of a certain material to form a difference in refractive index, including ion doping, ion diffusion and ion exchange technology, which have low manufacturing costs, but the loss of the device is large
Finally, post-processing technology, including thermal bonding and femtosecond laser processing technology, the former is very difficult to process the micron-scale core layer, and the latter is expensive

Method used

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  • Planar waveguide structure laser ceramic material and preparation method thereof
  • Planar waveguide structure laser ceramic material and preparation method thereof
  • Planar waveguide structure laser ceramic material and preparation method thereof

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preparation example Construction

[0053] The preparation method of the slab waveguide structure laser ceramics comprises the following steps:

[0054] a) According to R 3 Al 5 o 12 with (Ln x R 1-x ) 3 Al 5 o 12 Weigh the raw material powder according to the stoichiometric ratio and transfer it to two ball mill tanks A and B respectively;

[0055] b) Mix the raw material powders in ball mill tanks A and B with solvent and dispersant respectively, and ball mill to prepare two primary slurries;

[0056] c) Add binder and plasticizer to two primary slurries respectively, and perform secondary ball milling to obtain two final slurries;

[0057] d) preparing the two final slurries obtained in step c) into casting films respectively;

[0058] e) Cut and laminate the dried cast film according to the design requirements to prepare ceramic green bodies;

[0059] f) Debinding and cold isostatic pressing of the laminated blank;

[0060] g) Sintering the green body after cold isostatic pressing to obtain a slab...

Embodiment 1

[0100] Follow Y 3 al 5 o 12 The stoichiometric ratio of high-purity commercial Al 2 o 3 Powder 25.4903g, Y 2 o 3 33.8715g of powder is poured into high-purity alumina ball mill tank A. Then follow (Y 0.98 Nd 0.02 ) 3 al 5 o 12 The stoichiometric ratio weighs Al 2 o 3 Powder 25.4903g, Y 2 o 3Powder 33.1941g, Nd 2 o 3 1.0094g of powder is poured into high-purity alumina ball mill tank B. Add 0.2968g and 0.2980g of sintering aids TEOS, 0.2980g, MgO0.0297g, 1.2g of herring oil, 18g of absolute ethanol, and 6.5g of xylene into two ball milling tanks A and B respectively, and prepare a primary slurry by mixing and ball milling. The ball milling time is 12 hours. Add 4.75 g of binder polyvinyl butyral, 2.35 g of plasticizer polyethylene glycol and butyl benzyl phthalate, and ball mill and mix for 12 hours to prepare the final slurry. The homogeneously mixed slurry is moved into the vacuum degassing system and undergoes vacuum treatment to eliminate the air bubbles ...

Embodiment 2

[0102] Follow Y 3 Al 5 o 12 The stoichiometric ratio of high-purity commercial Al 2 o 3 Powder 25.4903g, Y 2 o 3 33.8715g of powder is poured into high-purity alumina ball mill tank A. Then follow (Y 0.99 Nd 0.01 ) 3 Al 5 o 12 The stoichiometric ratio weighs Al 2 o 3 Powder 25.4903g, Y 2 o 3 Powder 33.5328g, Nd 2 o 3 Pour 0.5047g of powder into high-purity alumina ball mill tank B. Add 0.4749g and 0.4762g of sintering aids TEOS, 0.0476g and 0.0475g of MgO, 0.6g of herring oil, 12g of absolute ethanol, and 12g of xylene to two ball milling tanks A and B respectively, and mix and ball mill to prepare a Slurry, ball milling time 10 hours. Add 4.76 g of binder polyvinyl butyral, 2.38 g of plasticizer polyethylene glycol and butyl benzyl phthalate, and ball mill and mix for 15 hours to prepare the final slurry. The homogeneously mixed slurry is moved into the vacuum degassing system, and after vacuum treatment, the air bubbles in the slurry are removed. The dega...

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Abstract

The present invention relates to a planar waveguide structure laser ceramic material and a preparation method thereof. The material comprises a core layer, an upper cladding layer cladding the core layer, and a lower cladding layer cladding the core layer, wherein the core layer adopts an activation-ion-Ln-doped RAG polycrystalline ceramic and has the chemical composition of (LnxR1-x)3Al5O12, the cladding layer adopts a pure RAG polycrystalline ceramic and has the chemical composition of R3Al5O12, Ln is Nd, Yb, Er, Ho and / or Tm, R is Y or Lu, and x is more than 0 and is less than or equal to 1, and the core layer and the cladding layers are respectively subjected to casting molding, and then are subjected to laminating sintering to prepare the planar waveguide structure laser ceramic material.

Description

technical field [0001] The invention relates to a laser ceramic material and a preparation method thereof, in particular to a laser ceramic material including a slab waveguide structure and a preparation method thereof. Background technique [0002] Solid-state lasers are widely used in military, processing, medical and scientific research fields. It is commonly used in ranging, tracking, guidance, drilling, cutting and welding, annealing of semiconductor materials, microprocessing of electronic devices, atmospheric detection, spectral research, surgery and ophthalmic operations, plasma diagnosis, pulse holography and other aspects. Solid-state lasers will generate a lot of waste heat during laser emission. If the heat is not dissipated in time, it will disturb the gain medium, affect the beam quality, and limit the increase of laser power. Therefore, the structure of the gain medium must be optimized. [0003] The waveguide structure is a micro-region with a relatively hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/44C04B35/622H01S3/063H01S3/06
Inventor 葛琳李江潘裕柏周智为谢腾飞巴学巍尹瑞李伟陈敏刘秉龙寇华敏石云冯锡淇郭景坤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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