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Compound calcium fluoborate and calcium fluoborate nonlinear optical crystals and preparation method and application thereof

A technology of nonlinear optics and calcium fluoroborate, applied in the field of compounds, can solve problems such as the difficulty of growing large-sized crystals

Active Publication Date: 2018-09-28
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

As we all know, the only practical deep ultraviolet nonlinear optical crystal is KBe invented by Chinese scientists. 2 BO 3 f 2 (KBBF) crystal, which has a layered growth habit, and it is difficult to grow large-sized crystals, which limits its application to a certain extent.

Method used

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  • Compound calcium fluoborate and calcium fluoborate nonlinear optical crystals and preparation method and application thereof
  • Compound calcium fluoborate and calcium fluoborate nonlinear optical crystals and preparation method and application thereof
  • Compound calcium fluoborate and calcium fluoborate nonlinear optical crystals and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0054] Preparation compound:

[0055] According to the reaction formula: 2CaF 2 +5B 2 o 3 →2CaB 5 o 7 f 3 , the compound CaB was synthesized by solid phase reaction 5 o 7 f 3 :

[0056] CaF 2 , B 2 o 3 Mix evenly at a molar ratio of 2:5, put it into a platinum crucible, place it in a muffle furnace and raise the temperature to 600°C, and keep the temperature constant for 48 hours to obtain the compound CaB 5 o 7 f 3 .

Embodiment 2

[0058] Preparation compound:

[0059] According to the reaction formula: 2CaF 2 +10H 3 BO 3 →2CaB 5 o 7 f 3 +15H 2 O, compound CaB was synthesized by solid phase reaction 5 o 7 f 3 :

[0060] CaF 2 , H 3 BO 3 Mix evenly at a molar ratio of 1:5, put it into a platinum crucible, place it in a muffle furnace and raise the temperature to 650°C, and keep the temperature constant for 24 hours to obtain the compound CaB 5 o 7 f 3 .

Embodiment 3

[0062] Preparation compound:

[0063] According to the reaction formula: 14Ca(OH) 2 +5Ca(BF 4 ) 2 →2CaB 5 o 7 f 3 +17CaF 2 +14H 2 O, compound CaB was synthesized by solid phase reaction 5 o 7 f 3 :

[0064] Ca(OH) 2 , Ca(BF 4 ) 2 Mix evenly at a molar ratio of 14:5, put it into a platinum crucible, place it in a muffle furnace and raise the temperature to 350°C, and keep the temperature constant for 120 hours to obtain the compound CaB 5 o 7 f 3 .

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Abstract

The invention provides a compound calcium fluoborate and calcium fluoborate nonlinear optical crystals and a preparation method and application thereof. The chemical formula of the compound is CaB5O7F3 and the molecular weight is 263.13. The compound is prepared by a solid-phase synthesis or vacuum encapsulation method. The chemical formula of the crystals is CaB5O7F3; the molecular weight is 263.13; the crystals belong to the orthorhombic system; and the space group is Cmc21. The cell parameters are as follows: a=9.926(10) angstrom, b=8.400(8) angstrom, c=7. 966(8) angstrom, alpha = beta = gamma = 90 degrees, the unit cell volume is 664.2 (11) angstrom 3, the frequency-doubled effect of the crystals is about double the frequency-doubled effect of KH2PO4 (KDP), and the ultraviolet absorption edge is shorter than 190 nm. The crystals are grown by a melt method, a high temperature solution method, a vacuum encapsulation method, a hydrothermal method or a room-temperature solution method.The crystals have good chemical stability and can be used as ultraviolet and deep ultraviolet nonlinear optical crystals in an all-solid-state laser.

Description

technical field [0001] The invention relates to a compound calcium fluoroborate CaB 5 o 7 f 3 and calcium fluoroborate CaB 5 o 7 f 3 Nonlinear optical crystal, its preparation method and application. Background technique [0002] Deep ultraviolet nonlinear optical crystals can use their frequency conversion properties to convert near-infrared and visible lasers into deep ultraviolet lasers with wavelengths less than 200nm, and have important application values ​​in medical, communication, scientific research and other fields. As we all know, the only practical deep ultraviolet nonlinear optical crystal is the KBe invented by Chinese scientists. 2 BO 3 f 2 (KBBF) crystal, which has a layered growth habit, and it is difficult to grow large-sized crystals, which limits its application to a certain extent. Therefore, it is of great significance and practical value to prepare and synthesize new deep ultraviolet nonlinear optical crystal materials with excellent comprehen...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B28/02C30B15/00C30B17/00C30B11/02C30B11/06
CPCC30B11/02C30B11/06C30B15/007C30B17/00C30B28/02C30B29/22
Inventor 潘世烈张志忠王颖侯雪玲
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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