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Alkali earth metal fluoborite compounds as well as crystal, preparation method and application thereof

A technology of fluoroborate and alkaline earth metal, which is applied in the field of new optoelectronic functional materials and growth, can solve the problems of environmental and personnel hazards, containing highly toxic elements Be, and poor structural integrity, and achieves good chemical stability.

Active Publication Date: 2019-07-23
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They overcome the layered habit of KBBF single crystal growth, but these crystals have not been able to replace KBBF single crystals so far, because the structural integrity of TBO crystals is not good, and the optical uniformity displayed by their macroscopic properties is very poor. It has been applied in practical devices; KABO and BABO crystals have good structural integrity and good optical uniformity, but because Al replaces Be, their absorption edges are red-shifted to about 180nm, and it is difficult to be used for deep ultraviolet harmonics. wave output
In addition, the common problem of these deep ultraviolet transparent crystals is that they all contain the highly toxic element Be, which will cause great harm to the environment and personnel during the crystal growth process.

Method used

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  • Alkali earth metal fluoborite compounds as well as crystal, preparation method and application thereof
  • Alkali earth metal fluoborite compounds as well as crystal, preparation method and application thereof
  • Alkali earth metal fluoborite compounds as well as crystal, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of CaB by solid phase reaction 5 o 7 f 3 and SrB 5 o 7 f 3 single crystal

[0037] Preparation of CaB 5 o 7 f 3 Raw material for single crystal: CaF 2 0.78g (0.01mol)

[0038] C 2 h 7 BF 3 N 1.13g (0.01mol)

[0039] h 3 BO 3 2.48g (0.04mol)

[0040] The specific operation steps are as follows: After weighing the raw materials according to the above dosage in the operation box, put them into the mortar, mix them evenly and grind them carefully, then put them into a 23ml hydrothermal kettle, and put the hydrothermal kettle into the muffle furnace , slowly raise the temperature of the oven to 270°C, keep the temperature constant for 5 days, and then lower the temperature to 30°C at a cooling rate of 3°C per hour. After cooling, wash the sample with water and alcohol to obtain CaB with a size of 1×0.5×0.5mm 5 o 7 f 3 single crystal.

[0041] Preparation of SrB 5 o 7 f 3 Raw material used for single crystal: SrF 2 1.26g (0.01mol)

[0...

Embodiment 2

[0046] Preparation of CaB by solid phase reaction 5 o 7 f 3 and SrB 5 o 7 f 3 single crystal

[0047] Preparation of CaB 5 o 7 f 3 Raw material for single crystal: CaF 2 7.8 grams (0.1mol)

[0048] C 2 h 7 BF 3 N 11.3g (0.1mol)

[0049] h 3 BO 3 24.8 grams (0.4mol)

[0050] The specific operation steps are as follows: After weighing the raw materials according to the above dosage in the operation box, put them into the mortar, mix them evenly and grind them carefully, then put them into a 23ml hydrothermal kettle, and put the hydrothermal kettle into the muffle furnace , slowly raise the temperature of the oven to 270°C, keep the temperature constant for 5 days, and then lower the temperature to 30°C at a cooling rate of 3°C per hour. After cooling, wash the sample with water and alcohol to obtain CaB with a size of 5×2×3mm 5 o 7 f 3 single crystal.

[0051] Preparation of SrB 5 o 7 f 3 Raw material used for single crystal: SrF 2 12.6g (0.1mol)

[...

Embodiment 3

[0056] With the CaB that embodiment 2 obtains 5 o 7 f 3 and SrB 5 o 7 f 3 Crystals, processed cut, oriented, polished and placed figure 1 In the 3 positions of the device shown, at room temperature, Q-switched Nd:YAG laser is used as the input light source, the incident wavelength is 1064nm, and an obvious 532nm frequency-doubled green light output is observed, CaB 5 o 7 f 3 The output intensity of the same condition KDP is about 2.3 times, SrB 5 o 7 f 3 The output intensity of KDP is about 2.5 times of the same condition KDP.

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Abstract

The invention relates to a novel photoelectron functional material, a growth method and an application, in particular to alkali earth metal fluoborite compounds as well as a crystal, a preparation method and an application thereof. The invention provides two alkali earth metal fluoborite compounds with the chemical formulas of CaB5O7F3 and SrB5O7F3 as well as nonlinear optical crystals, a preparation method and an application of the compounds. The CaB5O7F3 and SrB5O7F3 crystals can realize double frequency of Nd:YAG (lambda is equal to 1.064 mu m), and it can be predicted that CaB5O7F3 and SrB5O7F3 can be used for harmonic generators of triple frequency, fourfold frequency, fivefold frequency and sixfold frequency of Nd:YAG and even can be used for producing harmonic light with the wavelength shorter than 200 nm for output. The obtained CaB5O7F3 and SrB5O7F3 monocrystals are colorless, transparent, not prone to deliquescence and good in chemical stability. Predictably, CaB5O7F3 and SrB5O7F3 will be widely applied in various non-linear optical fields and non-linear optical application of deep ultraviolet bands will be opened up.

Description

technical field [0001] The present invention relates to a novel optoelectronic functional material and its growth method and use, in particular to an alkaline earth metal fluoroborate compound, its crystal, its preparation method and its use. Background technique [0002] The nonlinear optical effect of crystal refers to such an effect: when a beam of laser light with a certain polarization direction passes through a nonlinear optical crystal in a certain incident direction, the frequency of the beam will change. [0003] Crystals with nonlinear optical effects are called nonlinear optical crystals. The use of nonlinear optical crystals for laser frequency conversion broadens the range of laser wavelengths and makes the application of lasers more extensive. Especially borate nonlinear optical crystals such as BBO, LBO, KBBF, SBBO, TBO, KABO, BABO and other crystals have attracted much attention due to their excellent optical properties. The development of optical photograp...

Claims

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Application Information

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IPC IPC(8): C30B29/10C30B7/10C01B35/18G02F1/355
CPCC01B35/126C30B7/10C30B29/10G02F1/3551
Inventor 叶宁罗敏
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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