Large-dimension non-linear optical crystal hydrated potassium borate, and preparation method and application thereof

A technology of nonlinear optics and hydrated potassium borate, which is applied in the field of large-scale nonlinear optical crystal hydrated potassium borate and inorganic borate nonlinear optical crystals. The effect of short growth cycle, fast growth speed and simple operation

Inactive Publication Date: 2011-05-25
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY 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.
[0005] Although K 3 B 3 o 10 h 8 Compounds have been reported successively as early as 1975 (see "Unusual hydrogenbonding in some hydrated borate structures", "Acta Crystallogr.", 1977, B33, p3272), but these reports have not yet involved the testing and research of crystal linearity and nonlinear properties and Its application in nonlinear optics
To test the basic physical properties (including nonlinear optical properties) of a crystal, the crystal needs to be a single crystal with a size of several millimeters or even centimeters. 3 B 3 o 10 h 8 There are no reports of single crystals, and the crystals cannot be purchased in the market. Of course, there is no information about K 3 B 3 o 10 h 8 The report of the test results of the nonlinear optical properties of the single crystal may be K 3 B 3 o 10 h 8 The Report of Using Single Crystal to Fabricate Nonlinear Optical Devices

Method used

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  • Large-dimension non-linear optical crystal hydrated potassium borate, and preparation method and application thereof
  • Large-dimension non-linear optical crystal hydrated potassium borate, and preparation method and application thereof
  • Large-dimension non-linear optical crystal hydrated potassium borate, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] According to the chemical reaction formula KOH+H 3 BO 3 +H 2 O→K 3 B 3 o 10 h 8 +H 2 O as an example, the specific operation steps are as follows:

[0048] Weigh KOH solid (2.8055 g) and H at a molar ratio of 1:1 3 BO 3 powder (3.0915), and mix it in the polytetrafluoroethylene lining of a 25mL autoclave, add 0.5mL deionized water, and treat the incompletely dissolved substance in an ultrasonic wave at a temperature of 30°C for 60min to make it fully mixed Uniform;

[0049] Then the polytetrafluoroethylene liner was taken out, cooled to room temperature naturally, and KOH was added to adjust the pH value to 9;

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

[0051] Put the reaction kettle into a constant temperature box, raise the temperature to 180°C at a rate of 30°C / hour, keep the temperature constant for 6 days, and then drop it to room temperature at a rate of ...

Embodiment 2

[0054] With the chemical reaction formula K 2 CO 3 +H 3 BO 3 +H 2 O→K 3 B 3 o 10 h 8 +CO 2 ↑+H 2 O is an example, and the specific operation steps are carried out according to embodiment 1;

[0055] Weigh K with a molar ratio of 1:2 2 CO 3 Solid and H 3 BO 3 powder, and mix it in the polytetrafluoroethylene lining of a 40mL autoclave, add 1mL of deionized water, and treat the incompletely dissolved substance in an ultrasonic wave at a temperature of 40°C for 60min 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 8;

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

[0058] Put the reaction kettle into a constant temperature box, raise the temperature to 170°C at a rate of 50°C / hour, keep the temperature for 3 days, and then lower it to room temperature a...

Embodiment 3

[0061] According to the chemical reaction formula KOH+B 2 o 3 +H 2 O→K 3 B 3 o 10 h 8 +H 2 O is an example, and the specific operation steps are carried out according to embodiment 1;

[0062] Weigh KOH solid and B at a molar ratio of 1:1 2 o 3 powder, and mix it in the polytetrafluoroethylene lining of a 35mL autoclave, add 2mL of deionized water, and treat the incompletely dissolved substance in an ultrasonic wave at a temperature of 60°C for 60 minutes to make it fully mixed;

[0063] Then the polytetrafluoroethylene liner was taken out, cooled to room temperature naturally, and KOH was added to adjust the pH value to 11;

[0064] Compress the PTFE-lined lid, put it into a corresponding clean and pollution-free stainless steel autoclave, and tighten the piston;

[0065] Put the reaction kettle into a constant temperature box, raise the temperature to 200°C at a rate of 40°C / hour, keep the temperature for 10 days, and then lower it to room temperature at a rate of ...

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Abstract

The invention relates to a centimeter-grade large-dimension hydrated potassium borate non-linear optical crystal, and a preparation method and application. The crystal has a molecular formula of K3B3O10H8 and belongs to an orthorhombic system, the space group is Pna21, the molecular weight is 317.78, the unit cell parameter V is 942.3, and Z is 4. The optical crystal is prepared by adopting a hydro-thermal method. The non-linear optical effect of the non-linear optical crystal provided by the invention is one time of that of potassium dihydrogen phosphate (KDP) crystals, the ultraviolet absorption edge is below 190 nm, the optical crystal has a wide transmission range in ultraviolet and visible light regions, the preparation process has the advantages of low cost, low toxicity, short growing period, stable physical and chemical property and the like, and is simple to operate. The non-linear optical crystal provided by the invention has a wide application in non-linear optical devices such as frequency doubling converters, optical parameter oscillators and the like.

Description

technical field [0001] The invention relates to an inorganic borate nonlinear optical crystal, its preparation method and application, in particular to a centimeter-level large-scale nonlinear optical crystal hydrated potassium borate, its preparation method and application, belonging to the field of inorganic chemistry and also to fields of crystallography, materials 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. Nonlinear optical crystal materials have penetrated into various fields of laser technology, and have become indispensable crystal materials for technologies such as laser frequency conversion, electro-optical modulation, and photorefractive crystal memory and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B7/08G02F1/355
Inventor 王永疆
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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