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Large size potassium strontium borate nonlinear optical crystal, preparation and use thereof

A nonlinear optics, large-scale technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve problems such as crystals that cannot be purchased in the market

Inactive Publication Date: 2011-08-24
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

However, 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, and there is no relevant preparation of KSr with a size sufficient for physical property testing. 4 B 3 o 9 The report of single crystal, more can't buy this crystal on the market, the present invention aims at preparing large size KSr 4 B 3 o 9 Single crystal, and test its basic physical properties

Method used

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  • Large size potassium strontium borate nonlinear optical crystal, preparation and use thereof
  • Large size potassium strontium borate nonlinear optical crystal, preparation and use thereof
  • Large size potassium strontium borate nonlinear optical crystal, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take reaction formula (1) as an example: but not limited to reaction formula (1)

[0041] K 2 O+H 3 BO 3 +SrO→KSr 4 B 3 O 9 +H 2 O↑ Synthetic KSr 4 B 3 O 9 Compound, the specific steps are as follows:

[0042] Will K 2 O, H 3 BO 3 、SrO is put into a mortar in a stoichiometric ratio, mixed and carefully ground, then put into an open corundum crucible of Φ200mm×200mm, compacted, put into a muffle furnace, slowly heated to 450℃, constant temperature for 5 hours , Try to drive out the gas, take out the crucible after cooling, grind the sample evenly, and then place it in the crucible, keep it at 880℃ in the muffle furnace for another 5 hours, wait for its temperature to drop to room temperature, take it out, grind carefully, and again Constant temperature at 880°C for 24 hours, put it in a mortar after cooling, and lightly grind to obtain sintered potassium strontium borate KSr 4 B 3 O 9 Compound, and then X-ray analysis of the product, the obtained X-ray spectrum is completely ...

Embodiment 2

[0047] Take reaction formula (2) as an example: but not limited to reaction formula (2)

[0048] K 2 CO 3 +B 2 O 3 +SrO→KSr 4 B 3 O 9 +CO 2 ↑Synthetic KSr 4 B 3 O 9 Compound, the specific operation steps were carried out according to Example 1;

[0049] KSr to be synthesized 4 B 3 O 9 Compound and flux KF: H 3 BO 3 =1:1.5:1.5 for mixing, put it into an open platinum crucible of Φ100mm×100mm, raise the temperature to 1100°C, keep the temperature for 100 hours and then lower the temperature to 865°C, and cut along the b-axis (the seed crystal in Example 1 is optimized) Optimized KSr 4 B 3 O 9 The seed crystal is fixed on the lower end of the seed rod with platinum wire, and the seed crystal is introduced into the crucible from the small hole on the top of the furnace to make it contact with the liquid surface. The seed crystal rotates at a rate of 50 revolutions per minute. The single direction rotation time is 1 minute. The time interval is 0.1 minutes, the temperature is kept const...

Embodiment 3

[0052] Take reaction formula (4) as an example: but not limited to (4)

[0053] KNO 3 +H 3 BO 3 +Sr(NO 3 ) 2 →KSr 4 B 3 O 9 +NO 2 ↑Synthetic KSr 4 B 3 O 9 Compound, the specific operation steps were carried out according to Example 1;

[0054] KSr to be synthesized 4 B 3 O 9 Compound and flux NaF: H 3 BO 3 Mix according to the molar ratio of 1:3:2, put it into an open platinum crucible of Φ110mm×110mm, raise the temperature to 1000°C, and then cool it down to 865°C after 50 hours of constant temperature. Cut along the a-axis (the seed crystal in Example 1 Optimization) Optimized KSr 4 B 3 O 9 The seed crystal is fixed on the lower end of the seed crystal rod with platinum wire, and the seed crystal is introduced into the crucible from the small hole on the top of the furnace, and the seed crystal is brought into contact with the liquid surface. After the crystal growth is over, the crystals are removed from the liquid surface, reduced to room temperature at a rate of 25°C / hour, and...

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Abstract

The invention relates to a large size potassium strontium borate nonlinear optical crystal, the preparation and use thereof. The formula of the crystal is: KSr4B3O9, which belongs to rhombic system, the space group is Pna2(1), and the molecular weight is 566.01, and the crystal size is 10-60mmx10-60mmx10-60mm. The preparation contains the following steps of: evenly mixing the potassium strontium borate compound with a fusing assistant, heating, maintaining the constant temperature, cooling to the saturation temperature and obtaining a mixture solution, placing a seed crystal into the mixture solution, lowering the temperature to the saturation temperature to obtain the required crystal, and subsequently extracting the crystal from the liquid level, cooling to room temperature, and finally obtaining the large size potassium strontium borate nonlinear optical crystal. The nonlinear optical effect of the crystal is approximately the same as the KDP, the transparent optical band is 220nm-3000nm. The crystal is simple in operation, low in cost, large in crystal size, short in growth period, less in coating, high in laster damage threshold, good in mechanical property, firm, stable in physicochemical properties, uneasy to deliquescence, convenient for processing and storage, or the like. Accordingly, the nonlinear optical crystal of the invention can be abroadly applied in nonlinearoptical devices such as frequency doubler, optical parametric oscillator or the like.

Description

Technical field [0001] The invention relates to the growth of a large-size nonlinear optical crystal potassium strontium borate from an optimized composite flux, as well as the process flow of the potassium strontium borate crystal growth and the use as a nonlinear optical device. Background technique [0002] In the past ten years, due to the continuous deepening of social changes based on communication and information, nonlinear optical crystal materials (including laser frequency conversion materials, electro-optical materials and photorefractive materials) as one of the important information materials have been rapidly developed. Development and has played an increasingly important role in the high-tech field. For example, the frequency doubling effect of the crystal can be used to change the frequency of the laser, broaden the wavelength range of the laser light source, thereby obtaining a new laser light source and making the laser widely used. The all-solid-state laser sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/22C30B11/00G02F1/355
Inventor 潘世烈王永疆
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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