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Compound tetrahydroxy barium borate and tetrahydroxy barium borate nonlinear optical crystal as well as preparation method and application

A technology of barium hydroxyborate and nonlinear optics, which is applied in the direction of nonlinear optics, chemical instruments and methods, boron oxides, etc., can solve the problems of high price, long growth period, and serious layered growth habit, and achieve simple preparation, The effect of a short growth cycle

Active Publication Date: 2013-05-22
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.

Method used

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  • Compound tetrahydroxy barium borate and tetrahydroxy barium borate nonlinear optical crystal as well as preparation method and application
  • Compound tetrahydroxy barium borate and tetrahydroxy barium borate nonlinear optical crystal as well as preparation method and application
  • Compound tetrahydroxy barium borate and tetrahydroxy barium borate nonlinear optical crystal as well as preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] According to the chemical reaction formula Ba(NO 3 ) 2 +H 3 BO 3 +OH - +H 2 O → Ba 2 B 6 o 9 (OH) 4 +H 2 O+NO 3 - To prepare crystals, the specific steps are as follows:

[0051] a. Ba(NO 3 ) 2 Add to the polytetrafluoroethylene liner of the autoclave with a volume of 25mL, add H 3 BO 3 , then add 10mL of deionized water to make it fully mixed, in which Ba(NO 3 ) 2 with H 3 BO 3 The molar ratio is 1:1.3;

[0052] b. Add LiOH to the solution in step a to adjust the pH to 8;

[0053] c. Tighten the polytetrafluoroethylene liner cap where the mixed solution is located in step b, put it into a clean and pollution-free high-pressure reactor, and tighten the reactor piston;

[0054] d. Place the autoclave in step c in an incubator, raise the temperature to 200°C at a rate of 20°C / h, keep the temperature constant for 3 days, and then cool to room temperature at a rate of 4°C / h;

[0055] e. Open the high-pressure reaction kettle, filter the solution contai...

Embodiment 2

[0057] According to the chemical reaction formula Ba(CH 3 COO) 2 ·H 2 O+H 3 BO 3 +OH - +H 2 O → Ba 2 B 6 o 9 (OH) 4 +H 2 O+CH 3 COO - Prepare crystals:

[0058] a. Ba(CH 3 COO) 2 ·H 2 O was added to the Teflon-lined autoclave with a volume of 35 mL, and H3 BO 3 , and then add 15mL of deionized water to make it fully mixed, wherein Ba(CH 3 COO) 2 ·H 2 O and H 3 BO 3 The molar ratio is 1:0.2;

[0059] b. Add NaOH to the solution in step a to adjust the pH to 10;

[0060] c. Tighten the polytetrafluoroethylene liner cap where the mixed solution is located in step b, put it into a clean and pollution-free high-pressure reactor, and tighten the reactor piston;

[0061] d. Place the autoclave in step c in an incubator, raise the temperature to 150°C at a rate of 30°C / h, keep the temperature constant for 5 days, and cool to room temperature naturally;

[0062] e. Open the high-pressure reaction kettle, filter the solution containing crystals, and obtain the tr...

Embodiment 3

[0064] With the chemical reaction formula BaCl 2 +H 3 BO 3 +OH - +H 2 O → Ba 2 B 6 o 9 (OH) 4 +H 2 O+Cl - Prepare crystals:

[0065] a. BaCl 2 Add to the polytetrafluoroethylene liner of the autoclave with a volume of 50mL, add B 2 o 3 , and then add 20mL of deionized water to make it fully mixed, in which BaCl 2 with B 2 o 3 The molar ratio is 1:1;

[0066] b. Add LiOH to the solution in step a to adjust the pH value to 11;

[0067] c. Tighten the polytetrafluoroethylene liner cap where the mixed solution is located in step b, put it into a clean and pollution-free high-pressure reactor, and tighten the reactor piston;

[0068] d. Place the autoclave in step c in an incubator, raise the temperature to 140°C at a heating rate of 35°C / h, keep the temperature constant for 8 days, and then cool to room temperature at a cooling rate of 15°C / h;

[0069] e. Open the high-pressure reaction kettle, filter the solution containing crystals, and obtain the transparent c...

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Abstract

The invention relates to a compound tetrahydroxy barium borate and a tetrahydroxy barium borate nonlinear optical crystal as well as a preparation method and an application. The molecular formula of the compound is Ba2[B6O9(OH)4] and the molecular weight is 551.57. The molecular formula of the crystal is Ba2[B6O9(OH)4]; the crystal belongs to a monoclinic system; the space group is P21; the molecular weight is 551.57; the tetrahydroxy barium borate nonlinear optical crystal can be obtained by adopting a hydrothermal process through a method of programmed cooling or naturally cooling; the nonlinear optical effect of the crystal is three times that of a KDP (Potassinm Dihydengen Phosphate) crystal; a light-transmitting wave band is 190nm-2500nm long; the growth process of the crystal is simple to operate and low in cost; and the applied reagent is inorganic raw material and has the advantages of low toxicity, short growth period and stable physico-chemical property. The tetrahydroxy barium borate nonlinear optical crystal disclosed by the invention is widely used in nonlinear optical devices such as frequency conversion and optical parametric oscillators.

Description

technical field [0001] The invention relates to a compound barium tetrahydroxyborate and a barium tetrahydroxyborate nonlinear optical crystal, a preparation method and an application thereof, which belong to the field of inorganic chemistry, and also belong to the field of material science and optics. Background technique [0002] Nonlinear optical effects originate from the interaction between laser and medium. When the laser propagates in a medium with non-zero second-order polarizability, nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and optical parametric amplification will occur. Using the second-order nonlinear optical effect of crystals, nonlinear optical devices such as second-harmonic generators, frequency converters, and optical parametric oscillators can be made. They are widely used in many fields, such as laser technology, atmospheric monitoring, and national defense. It has important application value. After decad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B7/10C01B35/12G02F1/355
Inventor 潘世烈王莉杨云
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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