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Lead barium borate compound and lead barium borate nonlinear optical crystal and preparation method and application

A technology of nonlinear optics and lead-barium borate, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of crystal deliquescence, high price, long growth cycle, etc.

Inactive Publication Date: 2016-03-23
TANGSHAN COLLEGE
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, scientists at home and abroad 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 easy to deliquescence, Long growth cycle, serious layered growth habit and expensive price, etc.

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  • Lead barium borate compound and lead barium borate nonlinear optical crystal and preparation method and application
  • Lead barium borate compound and lead barium borate nonlinear optical crystal and preparation method and application

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preparation example Construction

[0045] A preparation method of compound lead barium borate, adopting solid phase reaction method, mixing uniformly according to molar ratio Ba:Pb:B:O=8.19:0.81:18:36, grinding, putting into muffle furnace, heating up to 400°C , keep the temperature for 24 hours, cool to room temperature, and get the sample; grind the sample, then raise the temperature to 750-850°C, and keep the temperature for 48 hours; during the constant temperature period, grind the sample many times, and finally obtain a fully sintered lead-barium borate compound single-phase polycrystalline powder.

[0046] A compound lead barium borate nonlinear optical crystal, the crystal chemical formula is Pb 0.81 Ba 8.19 B 18 o 36 , molecular weight 2063.14, belongs to hexagonal crystal system, space group R 32. The unit cell parameter is a =7.2116(7)?, c =19.226(4)?, Z=1, V=865.9(2)? 3 .

[0047] A method for preparing a compound lead barium borate nonlinear optical crystal, using a solid-state reaction meth...

Embodiment 1

[0061] According to the reaction formula: 8.19BaO+0.81PbO+18H 3 BO 3 →Pb 0.81 Ba 8.19 B 18 o 36 +26H 2 O ↑ synthesis of Pb 0.81 Ba 8.19 B 18 o 36 compound;

[0062] BaO, PbO, H 3 BO 3 Put it into a mortar with a molar ratio of 8.19:0.81:18, 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 constant for 24 hours, and cool to room temperature , fully ground, then heated up to 850°C, kept at a constant temperature for 48 hours, and fully ground to obtain a fully sintered lead-barium borate compound single-phase polycrystalline powder, and then X-ray analysis was performed on the polycrystalline powder. Lead Barium Pb 0.81 Ba 8.19 B 18 o 36 The X-ray spectra obtained by the single crystal structure are consistent;

[0063] The barium oxide in the reaction formula can be replaced by barium carbonate or barium nitrate or barium oxalate or ...

Embodiment 2

[0069] According to the reaction formula: 8.19BaCO 3 +0.81PbO+18H 3 BO 3 →Pb 0.81 Ba 8.19 B 18 o 36 +8.19CO 2 ↑+26H 2 O ↑ Synthetic compound Pb 0.81 Ba 8.19 B 18 o 36 ;

[0070] BaCO 3 , PbO, H 3 BO 3 Weigh the raw materials directly according to the molar ratio of 8.19:0.81:18, and combine the weighed raw materials with flux H 3 BO 3 Mix according to a molar ratio of 1:4, put it into an open platinum crucible of Φ80mm×80mm, heat it to 880°C at a heating rate of 30°C / h, and keep the temperature for 15 hours to obtain a mixed solution, 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 720°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 the lead barium borate seed crystal is obtained;

[0071] The barium carbonate in the...

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Abstract

The invention relates to a lead barium borate compound and a lead barium borate nonlinear optical crystal and a preparation method and application, and belongs to the technical field of nonlinear optical crystals. According to the technical scheme, the chemical formula of the crystal is Pb0.81Ba8.19B18O36, the molecular weight is 2063.14, the crystal belongs to a hexagonal system, the space group is R32, cell parameters are that a=7.2116(7) angstroms, c=19.226(4) angstroms, Z=1, V=865.9(2) cubic angstroms, the powder frequency-doubling effect reaches one third time that of KDP, the transparency range is wider, and the transparency wave band ranges from 310 nm to 2600 nm. The lead barium borate compound and the lead barium borate nonlinear optical crystal and the preparation method and application have the advantage that the compound is synthesized through a solid phase reaction method, the crystal is grown through a co-solvent method, the crystal is easy to operate, low in cost, large in size, short in growth cycle, few in inclusion, large in mechanical hardness and easy to cut, polish and preserve, and the lead barium borate nonlinear optical crystal can be widely applied in nonlinear optical devices such as frequency-doubling conversion and optical parametric oscillators.

Description

technical field [0001] The invention relates to a lead-barium borate compound, a lead-barium borate nonlinear optical crystal, a preparation method and an application, and belongs to the technical field of nonlinear optical crystals. Background technique [0002] Nonlinear optical crystals are one of the important optoelectronic information functional materials and an important material basis for optoelectronic technology, especially laser technology. Using nonlinear optical crystals, through nonlinear optical effects such as frequency doubling, frequency mixing, and optical parametric oscillation, the limited laser wavelength can be converted into a new band of laser light. Using this technology can fill in the blank spectral region of the laser wavelength emitted by various laser devices, so that the laser can be used more widely. The all-solid-state laser system can be realized by generating near-infrared laser light from a solid-state laser and then converting frequency...

Claims

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Application Information

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IPC IPC(8): C30B29/10C30B7/08G02F1/355
CPCC30B29/10C30B7/08G02F1/3551
Inventor 刘剑
Owner TANGSHAN COLLEGE
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