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Compound boric acid barium cesium, boric acid barium cesium nonlinear optical crystal, preparation method and application

A nonlinear optics and compound technology, applied in the field of compounds, can solve the problems of poor stability of water-containing compounds, limitation of layer length growth habit, and small frequency doubling coefficient.

Active Publication Date: 2016-10-05
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

KB 5 o 8 4H 2 O(KB5) is the earliest frequency doubling conversion crystal used in the ultraviolet band. Although its transmission band can reach the vacuum ultraviolet region, its frequency doubling coefficient is very small, and it is relatively poor in stability as an aqueous compound.
Among many ultraviolet borate crystals, potassium fluoroberyllium borate KBe 2 BO 3 f 2 (KBBF), with a lower UV cut-off edge and direct six-fold frequency output of 1064nm laser, is an excellent nonlinear optical crystal, however, the layer-length growth habit of this crystal greatly limits its application

Method used

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  • Compound boric acid barium cesium, boric acid barium cesium nonlinear optical crystal, preparation method and application
  • Compound boric acid barium cesium, boric acid barium cesium nonlinear optical crystal, preparation method and application
  • Compound boric acid barium cesium, boric acid barium cesium nonlinear optical crystal, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Synthetic CsBaB 9 O 15 Compound:

[0040] According to the chemical formula Cs 2 CO 3 +Ba(NO 3 ) 2 +H 3 BO 3 →CsBaB 9 O 15 +H 2 O↑+CO 2 ↑+NO 2 ↑+NO↑Synthesis of compound barium cesium borate CsBaB by solid-phase reaction method 9 O 15 :

[0041] a, Cs 2 CO 3 :Ba(NO 3 ) 2 :H 3 BO 3 Weigh into a mortar according to the molar ratio of 1:2:18, mix and grind carefully, put it into the corundum crucible, put it in the muffle furnace, slowly raise the temperature to 300℃, keep the temperature for 6 hours, cool to room temperature and grind evenly, slowly Raise the temperature to 500°C, drain the gas, take out the crucible after cooling, grind the sample evenly, then place it in the crucible, raise the muffle furnace to 600°C, take out the sample after 24 hours of constant temperature, cool to room temperature and grind evenly. Then put it in a crucible, raise the muffle furnace to 670°C, take out the sample after 4 days of constant temperature, put it in a mortar, mash and grind to...

Embodiment 2

[0049] According to the chemical formula Cs 2 CO 3 +BaO+B 2 O 3 →CsBaB 9 O 15 +CO 2 ↑Synthesis of compound barium cesium borate CsBaB by solid phase reaction method 9 O 15 :

[0050] a. The specific operation steps are carried out according to Example 1;

[0051] b. The synthesized compound cesium barium borate CsBaB 9 O 15 Single-phase polycrystalline powder and flux H 3 BO 3 CsBaB in molar ratio 9 O 15 :H 3 BO 3 =1:8 to mix, put it into an open platinum crucible of Φ80mm×80mm, put it into a crystal growth furnace, heat it to 780℃ at a temperature rise rate of 30℃ / h, keep it at a constant temperature for 28 hours, and then cool to a temperature of 740℃, Get a mixed melt;

[0052] c. Quickly lower the seed crystal rod into the melt from the mixed melt obtained in step b, wait for it to produce floating crystals, keep it at a constant temperature for 0.5h, and then slowly drop to a temperature of 710 at a rate of 1℃ / h ℃, then lift the seed rod out of the liquid surface and drop to ro...

Embodiment 3

[0057] According to the reaction formula Cs 2 O+BaCO 3 +H 3 BO 3 →CsBaB 9 O 15 +H 2 O↑+CO 2 ↑Synthetic compound CsBaB 9 O 15 :

[0058] a. The specific operation steps are carried out according to Example 1;

[0059] b. The synthesized compound cesium barium borate CsBaB 9 O 15 Single-phase polycrystalline powder and flux PbO molar ratio CsBaB 9 O 15 :PbO=1:2 for mixing, put it into an open platinum crucible of Φ80mm×80mm, put it in a crystal growth furnace, heat it to 780℃ at a temperature rise rate of 30℃ / h, keep it at a constant temperature for 30 hours, and then cool to temperature At 745°C, a mixed melt is obtained;

[0060] c. Quickly lower the seed rod into the molten melt from the mixed melt obtained in step b, and wait for it to produce floating crystals, keep the temperature at a constant temperature for 0.5h, and then slowly drop to the temperature 715 ℃, then lift the seed rod out of the liquid surface and drop to room temperature at a rate of 30℃ / h to obtain barium cesi...

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Abstract

The invention relates to a compound boric acid barium cesium, a boric acid barium cesium nonlinear optical crystal, a preparation method and application. The compound has the chemical formula of CsBaB9O15 and the molecular weight of 607.54 and is synthesized through a solid phase reaction method. The boric acid barium cesium nonlinear optical crystal has the chemical formula of CsBaB9O15, the molecular weight of 607.54, the space group of -Cc-, the cell parameter a of 6.4918(4) , the cell parameter b of 11.4075(6) , the cell parameter c of 17.2571(9) , the cell parameter beta of 92.375(3), the cell parameter Z of 4 and the cell parameter V of 1276.88(12) <3>. The powder 1064 nm frequency-doubled effect of the compound is 2-3 times that of KDP; the 532 nm frequency-doubled effect is about 1 time that of KDP, the transmission region is 175 nm to 2600 nm, and the crystal grows through a flux growth method. The method is easy to operate and low in cost; the prepared crystal is free of deliquescence in the air, good in mechanical performance, not prone to breakage, stable in physiochemical property, easy to process and suitable for manufacturing ultraviolet / deep ultraviolet nonlinear optical devices.

Description

Technical field [0001] The invention relates to a compound barium cesium borate and barium cesium borate nonlinear optical crystal, and a preparation method and application thereof. Background technique [0002] As a new type of optical material, nonlinear optical crystals are widely used in laser frequency conversion, four-wave mixing, beam steering, image amplification, optical information processing, optical storage, optical fiber communications, and other research fields. With the continuous development of laser technology, searching for laser frequency doubling crystals that can be applied to the ultraviolet and even deep ultraviolet regions has always been a hot spot in the scientific community to study nonlinear optical crystals. [0003] In the continuous research and exploration of nonlinear optical crystal materials, borate series compounds have received great attention. It is mainly due to two reasons: 1. In borate crystals, because B atoms and O atoms can have three-co...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B15/00C01B35/12
Inventor 潘世烈董孝宇侯雪玲史云晶
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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