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Barium fluoroborate aluminate second-order nonlinear optical crystal as well as preparation method and application thereof

A barium fluoroboroaluminate, second-order nonlinear technology, applied in the field of barium fluoroboroaluminate second-order nonlinear optical crystal and its preparation, achieves large nonlinear effect, wide ultraviolet transmission range, and crystal layered growth habit insignificant effect

Active Publication Date: 2022-03-01
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a barium fluoroboroaluminate second-order nonlinear optical crystal and its preparation method and application, so as to optimize the existing nonlinear optical crystals in practical applications.

Method used

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  • Barium fluoroborate aluminate second-order nonlinear optical crystal as well as preparation method and application thereof
  • Barium fluoroborate aluminate second-order nonlinear optical crystal as well as preparation method and application thereof
  • Barium fluoroborate aluminate second-order nonlinear optical crystal as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation compound:

[0026] According to the reaction formula: 2BaCO 3 + 2BaF 2 +Al 2 o 3 + 10H 3 BO 3 = 2Ba 2 AlB 5 o 10 f 2 + 15H 2 O + CO 2 ↑, synthesized compound Ba 2 AlB 5 o 10 f 2 , the amount of reagent used:

[0027] BaCO 3 1.578g (8mmol)

[0028] BaF 2 1.403g (8mmol)

[0029] Al 2 o 3 0.408g (4mmol)

[0030] h 3 BO 3 2.472g (40mmol)

[0031] The specific operation steps are as follows:

[0032] Accurately weigh the raw materials according to the above mass, put them into an agate mortar, mix them evenly and grind them carefully, then put them into a corundum crucible of φ60mm×60mm, compact them, put them into a muffle furnace and slowly raise the temperature to 600°C, and keep the temperature for 3 Hour. Then it is cooled to room temperature, taken out, fully ground again, compacted and placed in a muffle furnace, and burned at a temperature of 700°C for 10 hours to obtain the compound Ba 2 AlB 5 o 10 f 2 . Reaction pr...

Embodiment 2

[0034] Preparation compound:

[0035] According to the reaction formula: 2BaF 2 + AlF 3 + 5H 3 BO 3 = Ba 2 AlB 5 o 10 f 2 + 5H 2 O + 5HF, synthetic compound Ba 2 AlB 5 o 10 f 2 , the amount of reagent used:

[0036] BaF 2 3.506g (0.020mol)

[0037] AlF 3 0.420g (0.005mol)

[0038] h 3 BO 3 1.545g (0.025mol)

[0039] The specific operation steps are as follows:

[0040] Accurately weigh the raw materials according to the above mass, put them into an agate mortar, mix them evenly and grind them carefully, then put them into a platinum crucible of φ40mm×40mm, compact them, put them into a muffle furnace and slowly raise the temperature to 600°C, and keep the temperature constant for 20 hours . Then it is cooled to room temperature, taken out, fully ground again, compacted and placed in a muffle furnace, and burned at 750°C for 96 hours to obtain compound Ba 2 AlB 5 o 10 f 2 . It has been detected that the diffraction pattern is similar to that of t...

Embodiment 3

[0042] Ba 2 AlB 5 o 10 f 2 Nonlinear Optical Crystals:

[0043] Compound Ba prepared according to Example 2 2 AlB 5 o 10 f 2 The polycrystalline powder and the flux CsF are mixed evenly at a molar ratio of 1:5, put into a platinum crucible, heated to 700°C, and kept at a constant temperature for 24 hours to obtain a mixed melt; quickly cool down to 10°C above the saturation point. Then fix the seed crystal on the lower end of the seed crystal rod to contact with the liquid surface of the molten salt, and after overheating for 10 minutes, cool down to the saturation temperature to start crystal growth. A crystal rotation of 3 rpm was applied by a crystal growth controller, and then the temperature was slowly lowered at a rate of 0.1 °C / day. After cooling down, lift the crystals from the liquid surface and drop to room temperature at a rate of 30°C / hour. After the crystal growth stops, Ba 2 AlB 5 o 10 f 2 Nonlinear Optical Crystals. Crystal structure such as image...

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Abstract

The invention provides a barium borofluoride aluminate second-order nonlinear optical crystal and a preparation method and application thereof, the chemical formula of the crystal is Ba2AlB5O10F2, the structure of the crystal belongs to a trigonal system, the space group is P3121, the cell parameters are a = 7.0976 (16), b = 7.0976 (16), c = 21.225 (7), alpha = beta = 90 degrees, gamma = 120 degrees, and the unit cell volume is 926.0 (5) 3. The crystal disclosed by the invention can be used for harmonic generators with double frequency, triple frequency, quadruplicated frequency, five frequency and even six frequency of an Nd: YAG laser, and harmonic light output shorter than 200nm is generated. The crystal is of a single-crystal structure, is colorless and transparent, is stable in air, is good in thermal stability, is not synthesized from highly toxic raw materials, and is not remarkable in layered growth habit.

Description

technical field [0001] The invention relates to the technical field of optoelectronic functional materials, in particular to a second-order nonlinear optical crystal of barium fluoroboroaluminate and its preparation method and application. Background technique [0002] As a high-intensity and directional coherent monochromatic light source, laser is widely used in scientific research, industry, transportation, national defense, medical and health and other related fields. However, the laser wave bands directly output by various lasers at present are limited, and there are still blank laser wave bands from the ultraviolet band to the infrared band. Nonlinear optical crystals can change the wavelength of laser light by means of sum frequency, difference frequency, and optical parametric oscillation, and play an irreplaceable role in laser technology. Borate nonlinear optical crystals are currently the most widely used laser frequency conversion crystals, and there are many no...

Claims

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Application Information

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IPC IPC(8): C30B29/10C30B9/12G02F1/355G02F1/39
CPCC30B29/10C30B9/12G02F1/3551G02F1/392
Inventor 王颖白硕
Owner HEBEI UNIVERSITY
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