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Hydrated potassium borate and hydrated potassium borate nonlinear optical crystal and preparation method and application

A hydrated potassium borate and nonlinear optics technology, which is applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of high price, long growth period, and easy deliquescence of crystals, and achieve simple preparation and short growth period Effect

Inactive Publication Date: 2018-03-06
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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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.
[0004] In 1966, although K 3 B 3 o 4 (OH) 4 2H 2 O reports, but these reported compounds crystallized in Pna2 1 Space group, and the report does not involve the linear and nonlinear performance tests of crystals and their applications in nonlinear optics

Method used

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  • Hydrated potassium borate and hydrated potassium borate nonlinear optical crystal and preparation method and application
  • Hydrated potassium borate and hydrated potassium borate nonlinear optical crystal and preparation method and application
  • Hydrated potassium borate and hydrated potassium borate nonlinear optical crystal and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] According to the chemical reaction formula KOH+H 3 BO 3 +H 2 O→K 3 B 3 o 4 (OH) 4 2H 2 O+H 2 O prepares transparent K 3 B 3 o 4 (OH) 4 2H 2 O crystals;

[0041] Weigh KOH solid and H at a molar ratio of 1:1 3 BO 3 Add the powder to the polytetrafluoroethylene lining of a 25mL autoclave, add 1mL of deionized water, and treat the incompletely dissolved mixture in an ultrasonic wave at a temperature of 30°C for 60 minutes to make it fully mixed;

[0042] Take out the polytetrafluoroethylene liner, cool naturally to room temperature, add KOH to adjust the pH value to 11;

[0043] Compress the PTFE-lined lid, put it into a corresponding clean, pollution-free stainless steel high-pressure reactor, and tighten the piston;

[0044] Put the reaction kettle into a constant temperature box, raise the temperature to 180°C at a rate of 30°C / h, keep the temperature for 6 days, and then lower it to room temperature at a rate of 20°C / day;

[0045] Open the reaction ket...

Embodiment 2

[0047] With the chemical reaction formula K 2 CO 3 +H 3 BO 3 +H 2 O→K 3 B 3 o 4 (OH) 4 2H 2 O+CO 2 ↑+H 2 O Transparent K 3 B 3 o 4 (OH) 4 2H 2 O crystals;

[0048] Weigh K with a molar ratio of 1:2 2 CO 3 Solid and H 3 BO 3 Add the powder to the polytetrafluoroethylene lining of a 40mL autoclave, add 5mL of deionized water, and ultrasonically treat the incompletely dissolved mixture at a temperature of 40°C for 60 minutes to make it fully mixed;

[0049] Then the polytetrafluoroethylene liner was taken out, cooled to room temperature naturally, and KOH was added to adjust the pH value to 10;

[0050] Compress the PTFE-lined lid, put it into a corresponding clean, pollution-free stainless steel high-pressure reactor, and tighten the piston;

[0051] Put the reaction kettle into a constant temperature box, raise the temperature to 170°C at a rate of 50°C / h, keep the temperature for 3 days, and then lower it to room temperature at a rate of 30°C / day;

[0052] ...

Embodiment 3

[0054] According to the chemical reaction formula KOH+B 2 o 3 +H 2 O→K 3 B 3 o 4 (OH) 4 2H 2 O+H 2 O Transparent K 3 B 3 o 4 (OH) 4 2H 2 O crystals;

[0055] Weigh KOH solid and B with a molar ratio of 1:1 2 o 3 Add the powder to the polytetrafluoroethylene lining of a 35mL autoclave, add 2mL of deionized water, and treat the incompletely dissolved mixture at a temperature of 60°C in ultrasonic waves for 60 minutes to make it fully mixed;

[0056] Then the polytetrafluoroethylene liner was taken out, cooled to room temperature naturally, and KOH was added to adjust the pH value to 11;

[0057] Compress the PTFE-lined lid, put it into a corresponding clean, pollution-free stainless steel high-pressure reactor, and tighten the piston;

[0058] Put the reaction kettle into a constant temperature box, raise the temperature to 200°C at a temperature increase rate of 40°C / h, keep the temperature for 10 days, and then lower it to room temperature at a temperature drop...

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Abstract

The invention relates to hydrated potassium borate and a hydrated potassium borate nonlinear optical crystal and a preparation method and application. The chemical formula of the compound is K3B3O4(OH)4 2H2O, and the molecular weight of the compound is 317.79. The compound is a clear crystal. The chemical formula of the hydrated potassium borate nonlinear optical crystal is K3B3O4(OH)4 2H2O, and the molecular weight of the hydrated potassium borate nonlinear optical crystal is 317.79 and the crystal belongs to an orthorhombic crystal system and a space group (i)Cmc( / i)21. The unit cell parameters are as follows: a is equal to 13.806 angstroms, b is equal to 7.910 angstroms, c is equal to 9.093 angstroms and z is equal to 4 angstroms. The K3B3O4(OH)4 2H2O nonlinear optical crystal is obtained by the adoption of a hydrothermal method, which grows well and transparent. The nonlinear optical effect of the crystal is somewhere fourth five of that of a KDP crystal. The ultraviolet absorptioncut-off side is lower than 190nm, and there are wide transmission ranges in ultraviolet and visible regions. The crystal has the advantages of being easy to operate, low in cost, small in toxicity, short in growth cycle and stable in physico-chemical property during growth. The nonlinear optical crystal can be broadly applied to nonlinear optical devices such as frequency multiplication converters and optical parametric oscillators.

Description

technical field [0001] The invention relates to a compound potassium borate hydrate and a crystal preparation method and application of potassium borate hydrate nonlinear optics, which belong to the field of inorganic chemistry, and also belong to the fields of crystallography, material science and optics. Background technique [0002] Since Maiman invented the ruby ​​laser in 1960, lasers have played an increasingly important role in various fields of the national economy such as information storage and transportation, mechanical processing, medical care, teaching and scientific research. With the advancement and development of technology, various lasers have entered people's lives. However, in laser technology, the laser wavebands that can be obtained directly by using lasers are limited, and there are still blank wavebands from ultraviolet to infrared spectral regions. Crystals with nonlinear effects play an important role in laser conversion. Using nonlinear optical cr...

Claims

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Application Information

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IPC IPC(8): C30B7/10C30B29/10G02F1/355G02F1/37G02F1/39C01B35/12
CPCC01B35/121C01P2002/72C01P2002/77C30B7/10C30B29/10G02F1/3551G02F1/37G02F1/39G02F1/392
Inventor 潘世烈刘琼张香玉杨志华龙西法
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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