Compound Pb0.78Ba8.22B18O36, Pb0.78Ba8.22B18O36 nonlinear optical crystal, preparation methods and application

A technology of nonlinear optics, lead-barium-boron-oxygen, applied in the direction of nonlinear optics, chemical instruments and methods, boron compounds, etc., can solve the problems of serious layered growth habit, long growth cycle, deliquescence of crystals, etc., and achieve inclusions The effect of less, short growth cycle and high mechanical hardness

Inactive Publication Date: 2016-02-17
TANGSHAN COLLEGE
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Problems solved by technology

[0004] At present, scientists from all over the world are still paying close attention to the exploration and research of various new nonlinear optical crystals. Although the crystal growth technology of existing materials has become increasingly mature, there are still obvious shortcomings: such as crystals are prone to deliquescence, growth Long cycle, serious layered growth habit and high price

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  • Compound Pb0.78Ba8.22B18O36, Pb0.78Ba8.22B18O36 nonlinear optical crystal, preparation methods and application
  • Compound Pb0.78Ba8.22B18O36, Pb0.78Ba8.22B18O36 nonlinear optical crystal, preparation methods and application
  • Compound Pb0.78Ba8.22B18O36, Pb0.78Ba8.22B18O36 nonlinear optical crystal, preparation methods and application

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preparation example Construction

[0046] A preparation method of compound lead, barium, boron and oxygen, adopting solid phase reaction method, mixing uniformly according to molar ratio Ba:Pb:B:O=8.22:0.78:18:36, grinding, putting into muffle furnace, heating up to 400 ℃, keep the temperature for 24 hours, cool to room temperature, and get the sample; grind the sample, then raise the temperature to 730-850°C, and keep the temperature for 48 hours; during the constant temperature period, grind the sample many times, and finally get a fully sintered lead-barium-boron-oxygen compound single-phase polycrystalline powder, and the polycrystalline powder was subjected to X-ray analysis.

[0047] A compound lead barium boron oxygen nonlinear optical crystal, the crystal chemical formula is Pb 0.78 Ba 8.22 B 18 o 36 , molecular weight 2060.84, belongs to hexagonal crystal system, space group R 32. The unit cell parameter is a =7.2225(2)?, c =19.2716(10)?, Z=1, V=870.61(6)? 3 .

[0048] A method for preparing a ...

Embodiment 1

[0062] According to the reaction formula: Synthetic Pb 0.78 Ba 8.22 B 18 o 36 compound;

[0063] BaO, PbO, H 3 BO 3 Put it into a mortar with a molar ratio of 8.22:0.78:18, mix and grind it carefully, then put it into a corundum crucible with an opening of Φ100mm×100mm, put it in a muffle furnace, raise the temperature to 400°C, keep the temperature for 24 hours, and cool to room temperature , fully ground, and then heated to 850 ° C, kept at constant temperature for 48 hours, fully ground, and then a fully sintered lead-barium-boron-oxygen compound single-phase polycrystalline powder was obtained, and then X-ray analysis was performed on the polycrystalline powder, and the obtained X-ray spectrum was consistent with that of lead barium boron oxide Pb 0.78 Ba 8.22 B 18 o 36 The X-ray spectra obtained by the single crystal structure are consistent;

[0064] The barium oxide in the reaction formula can be replaced by barium carbonate or barium nitrate or barium oxala...

Embodiment 2

[0070] According to the reaction formula: Synthetic compound Pb 0.78 Ba 8.22 B 18 o 36 ;

[0071] BaCO 3 , PbO, H 3 BO 3 Weigh the raw materials directly according to the molar ratio of 8.22:0.78:18, and combine the weighed raw materials with flux H 3 BO 3 Mix according to a molar ratio of 1:3, put it into an open platinum crucible of Φ80mm×80mm, heat it to 900°C at a heating rate of 30°C / h, keep the temperature for 15 hours to obtain a mixed solution, and then cool it down to 820°C. At this time, the seed rod is quickly extended under the liquid surface, and the temperature is slowly lowered to 750°C at a rate of 1°C / h, and the seed rod is lifted out of the liquid surface. Small crystals will gather on the seed rod, and the temperature is 35°C / h. The rate of h is reduced to room temperature, and lead-barium-boron-oxygen seed crystals are obtained;

[0072] The barium carbonate in the reaction formula can be replaced by barium oxide or barium nitrate or barium oxala...

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Abstract

The invention relates to a compound Pb0.78Ba8.22B18O36, a Pb0.78Ba8.22B18O36 nonlinear optical crystal, preparation methods and an application and belongs to the technical field of nonlinear optical crystals. According to the technical scheme, the chemical formula is Pb0.78Ba8.22B18O36, the molecular weight is 2060.84, the crystal belongs to a hexagonal crystal system and a space group R32, for lattice parameters, a is equal to 7.2225(2) angstrom, c is equal to 19.2716(10) angstrom, Z is equal to 1 and V is equal to 870.61(6) angstrom<3>; the frequency-doubling effect of powder of the crystal reaches 1 / 3 times of KDP (potassium dihydrogen phosphate), and the light transmitting waveband is 310 nm-2,600 nm. The compound Pb0.78Ba8.22B18O36 and the Pb0.78Ba8.22B18O36 nonlinear optical crystal have the positive effects as follows: the compound is synthesized with a solid phase reaction method, the crystal growth is realized with a co-solvent method, and the crystal has the advantages of simplicity in operation, low cost, large size, short growth period, a few inclusions, higher mechanical hardness and easiness in cutting, polishing processing and storage; the Pb0.78Ba8.22B18O36 nonlinear optical crystal can be widely applied to frequency-doubling conversion as well as nonlinear optical devices such as an optical parametric oscillator and the like.

Description

technical field [0001] The invention relates to a compound lead-barium-boron-oxygen and lead-barium-boron-oxygen nonlinear optical crystal, a preparation method and application thereof, and belongs to the technical field of nonlinear optical crystals. Background technique [0002] Nonlinear optical crystals have very broad application prospects in the fields of laser chemistry, laser medicine, molecular biology, and optical storage. Wide range of applications. The exploration of new nonlinear optical materials is very active at home and abroad, and the research on borate crystals is one of the hot spots. [0003] The nonlinear optical crystals widely used at present are mainly borate series crystals. Borate nonlinear optical crystals show unique advantages in many aspects. There are various structural types of boron-oxygen groups in borate crystals, but there are two basic types of boron-oxygen groups in borate crystals, one BO with planar triangular coordination 3 group...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B9/12C30B29/22C01B35/12G02F1/355
CPCC01B35/128C01P2002/72C30B9/12C30B29/22G02F1/3551
Inventor 赵文武
Owner TANGSHAN COLLEGE
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