Compound yttrium barium borate, yttrium barium borate nonlinear optical crystal and preparation method and application thereof

A nonlinear optics, compound technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of long growth cycle, high price, serious layered growth habit, etc.

Active Publication Date: 2021-12-28
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the crystal growth technology of these materials has become increasingly mature, there are still obvious shortcomings: such as crystal deliquescence, long growth cycle, serious layered growth habit and expensive price, etc.

Method used

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  • Compound yttrium barium borate, yttrium barium borate nonlinear optical crystal and preparation method and application thereof
  • Compound yttrium barium borate, yttrium barium borate nonlinear optical crystal and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0038] According to the reaction formula: 2BaCO 3 +Y 2 o 3 +2H 3 BO 3 →2BaYBO 4 +2CO 2 ↑+3H 2 O↑ Synthesis of BaYBO 4 Compound:

[0039] BaCO 3 , Y 2 o 3 、H 3 BO 3 Weigh it into a mortar with a molar ratio of 1:0.5:1, mix and grind it carefully, then put it into a corundum crucible with an opening of Φ100mm×100mm, put it into a muffle furnace, slowly raise the temperature to 400°C, and keep the temperature constant for 24 hours. Cool to room temperature, take it out and put it into the muffle furnace after the second grinding, then raise the temperature to 800°C, keep the temperature for 24 hours, cool to room temperature, take it out and put it into the muffle furnace after the third grinding, and then heat it at 800°C Constant temperature for 48 hours, take out the single-phase polycrystalline powder of barium yttrium borate compound obtained by grinding, and carry out X-ray analysis on the product, the obtained X-ray spectrum is consistent with that of barium y...

Embodiment 2

[0046] According to the reaction formula: 2Ba(NO 3 ) 2 +Y 2 o 3 +2H 3 BO 3 →2BaYBO 4 +4NO 2 ↑+3H 2 O↑+O 2 ↑ Synthesis of BaYBO 4 Compound:

[0047] Ba(NO 3 ) 2 , Y 2 o 3 、H 3 BO 3 Weigh the raw materials directly at a molar ratio of 1:0.5:1, mix the weighed raw materials with flux NaF at a molar ratio of 1:5, put them into a Φ80mm×80mm open platinum crucible, raise the temperature to 800°C, and keep the temperature constant After 72 hours, the mixed melt was obtained, and cooled down to a temperature of 750° C.;

[0048] Slowly cool down to room temperature at a rate of 3°C / h, and spontaneously crystallize to obtain barium yttrium borate seed crystals;

[0049] BaYBO will be obtained 4 The seed crystal is fixed on the seed crystal rod, and the seed crystal is lowered from the top of the crystal growth furnace. The seed crystal is preheated on the surface of the mixed melt for 10 minutes, and immersed in the liquid surface, so that the seed crystal is melted b...

Embodiment 3

[0053] According to the reaction formula: 2Ba(OH) 2 +Y 2 o 3 +2H 3 BO 3 →2BaYBO 4 +5H 2 O↑ Synthesis of BaYBO 4 Compound:

[0054] Ba(OH) 2 , Y 2 o 3 、H 3 BO 3 Weigh the raw materials directly at a molar ratio of 1:0.5:1, mix the weighed raw materials with flux NaF at a molar ratio of 1:3, put them into an open platinum crucible of Φ80mm×80mm, and heat up to a temperature of 980°C. Keep the temperature constant for 72 hours to obtain a mixed melt, and then lower the temperature to 880°C;

[0055] Slowly cool down to room temperature at a rate of 3°C / h, and spontaneously crystallize to obtain barium yttrium borate seed crystals;

[0056] BaYBO will be obtained 4 The seed crystal is fixed on the seed crystal rod, and the seed crystal is lowered from the top of the crystal growth furnace. The seed crystal is preheated on the surface of the mixed melt for 10 minutes, and immersed in the liquid surface, so that the seed crystal is melted back in the mixed melt, and th...

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Abstract

The invention relates to a compound barium yttrium borate, a barium yttrium borate nonlinear optical crystal and a preparation method and application thereof, wherein the chemical formulas of the compound and the crystal are BaYBO4, the crystal belongs to a hexagonal system, the space group cell parameter Z is 3, the molecular weight is 301.06, and the frequency-doubled effect of the crystal is about 3 times that of KDP (KH2PO4). The compound yttrium barium borate is synthesized by adopting a solid-phase reaction method, the yttrium barium borate nonlinear optical crystal grows by adopting a high-temperature melting method or a pulling method, the crystal preparation method is simple and low in cost, and the prepared crystal is high in mechanical hardness and easy to cut, polish, process and store. The barium yttrium borate crystal obtained by the method is applied as a nonlinear optical frequency doubling device.

Description

technical field [0001] The present invention relates to the chemical formula BaYBO 4 The compound barium yttrium borate and barium yttrium borate nonlinear optical crystal, the preparation method of the crystal and the nonlinear optical device made by using the crystal. Background technique [0002] Exploring new nonlinear optical crystals with large frequency doubling effect, wide transmission band, large optical damage threshold, and stable physical and chemical properties has always been a hot topic in the field of laser frequency conversion. At present, the main nonlinear optical materials are: β-BaB 2 o 4 (BBO) crystal, LiB 3 o 5 (LBO) crystal, CsB 3 o 5 (CBO) crystal, CsLiB 6 o 10 (CLBO) crystals and KBe 2 BO 3 f 2 (KBBF) crystals. Although the crystal growth technology of these materials has become increasingly mature, there are still obvious deficiencies: such as crystal deliquescence, long growth cycle, serious layered growth habit and high price. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B9/12G02F1/355
CPCC30B29/22C30B9/12G02F1/3551
Inventor 吴红萍高蒙恩俞洪伟胡章贵
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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