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Preparation method and application of strontium fluoroborate nonlinear optical crystal

A technique of nonlinear optics and strontium fluoroborate, which is applied in the field of preparation of nonlinear optical crystals, and can solve the problems such as the inability to purchase crystals in the market.

Active Publication Date: 2015-11-25
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to better test the basic physical properties of the crystal (including linear and nonlinear optical properties), the crystal needs to be a single crystal with a size of several millimeters or even centimeters, but it has not yet been possible to obtain fluoroboric acid with a size sufficient for physical testing. Strontium Sr 3 B 6 o 11 f 2 Single crystals are reported, and it is not possible to buy this crystal in the market

Method used

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  • Preparation method and application of strontium fluoroborate nonlinear optical crystal
  • Preparation method and application of strontium fluoroborate nonlinear optical crystal
  • Preparation method and application of strontium fluoroborate nonlinear optical crystal

Examples

Experimental program
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Embodiment 1

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

[0041] SrCO 3 +SrF 2 +H 3 BO 3 →Sr 3 B 6 o 11 f 2 +H 2 O↑+CO 2 ↑Synthesis of Sr 3 B 6 o 11 f 2 Crystal, the specific operation is as follows:

[0042] SrCO 3 , SrF 2 、H 3 BO 3 Put it into a mortar in a ratio of 2:1:6, mix it evenly, weigh it, put it in a mortar, mix it and grind it carefully, put it into a corundum crucible, put it into a muffle furnace, slowly raise the temperature to 300°C, and keep the temperature for 3 hours , cooled to room temperature and ground evenly, after cooling, take out the crucible, grind the sample evenly, then place it in the crucible, raise the temperature of the muffle furnace to 630°C, take out the sample after constant temperature for 72 hours, put it into a mortar, mash and grind Strontium fluoroborate compound single-phase polycrystalline powder is obtained, and then the polycrystalline powder is subjected to X-ray analysis, and the...

Embodiment 2

[0049] Take reaction formula (2) as an example, but not limited to reaction formula (2)

[0050] Sr(NO 3 ) 2 +SrF 2 +B 2 o 3 →Sr 3 B 6 o 11 f 2 +NO 2 ↑+H 2 O ↑ Synthesis of Sr 3 B 6 o 11 f 2 Crystal, specific operation steps are carried out according to embodiment 1;

[0051] The synthesized compound strontium fluoroborate Sr 3 B 6 o 11 f 2 Polycrystalline powder and flux H 3 BO 3 and NaF and PbO molar ratio Sr 3 B 6 o 11 f 2 :H 3 BO 3 : PbO: NaF = 1: 4: 1: 3 into an open platinum crucible of Φ80mm × 80mm, put it in a crystal growth furnace, heat at 940°C at a heating rate of 70°C / h, keep the temperature constant for 24 hours, and then cool to 880°C, get a mixed melt of strontium fluoroborate and flux, quickly put the seed rod into the melt, wait for it to produce crystal bleaching, keep the temperature for 0.5h, and then slowly Lower the temperature to 800°C, lift the seed rod out of the liquid surface, and lower the temperature to room temperature ...

Embodiment 3

[0057] Take reaction formula (3) as an example, but not limited to reaction formula (3)

[0058] Press SrSO 4 +SrF 2 +H 3 BO 3 →Sr 3 B 6 o 11 f 2 +H 2 O↑+SO 2

[0059] Reactive Synthesis Compound Sr 3 B 6 o 11 f 2 , the specific operation steps are carried out according to embodiment 1;

[0060] The synthesized compound strontium fluoroborate Sr 3 B 6 o 11 f 2 Single-phase polycrystalline powder and flux molar ratio Sr 3 B 6 o 11 f 2 :H 3 BO 3 : PbO: KF = 1: 4: 1: 2 for mixing, put it into a Φ80mm×80mm open platinum crucible, put it into a crystal growth furnace, heat it to 900°C at a heating rate of 80°C / h, and keep the temperature at 20°C. Hours, then cooled to 865°C to obtain a mixed melt of strontium fluoroborate and flux, quickly put the seed rod into the melt, wait for it to produce crystal bleaching, keep the temperature for 0.5h to bleach the crystals, and use a temperature of 1.5°C / Slowly decrease the rate of h to 810°C, lift the seed rod out...

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Abstract

The invention relates to a preparation method of strontium fluoroborate nonlinear optical crystals, and applications of the strontium fluoroborate nonlinear optical crystals. Compound synthesis is realized via solid phase reaction, and crystal growth is realized via flux growth method. The preparation method is simple in operation, and low in cost. The obtained strontium fluoroborate nonlinear optical crystals will not deliquesce in the air, possesses excellent mechanical properties and stable physico-chemical properties, is unbreakable, is convenient for processing, and is suitable for preparation of nonlinear optical devices. Frequency-doubled effect of the strontium fluoroborate nonlinear optical crystals obtained by the preparation method is three times of that of KDP, and the strontium fluoroborate nonlinear optical crystals can be widely used in nonlinear optical devices such as double frequency converters and optical parametric oscillators.

Description

technical field [0001] The invention relates to a preparation method and application of a nonlinear optical crystal, in particular to a preparation method and application of a halogen-containing strontium fluoroborate nonlinear optical crystal. Background technique [0002] In the past ten years, due to the deepening of social development based on communication and information, nonlinear optical crystals (including laser frequency conversion materials, optoelectronic materials and photorefractive materials) have developed rapidly as one of the important information materials. At present, nonlinear optical material crystals are widely used in research fields such as laser frequency conversion, beam steering, image amplification, optical information processing, optical storage, optical fiber communication, underwater communication, laser countermeasures and nuclear fusion. With the continuous development of laser technology, searching for laser frequency-doubling crystals that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/10C30B9/12
Inventor 潘世烈黄振军田雪林
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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