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Compound zinc rubidium germanate nonlinear optical crystal and preparation method and application thereof

A nonlinear optics, zinc germanate technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of low laser damage threshold of LN crystal, high toxicity, phase transition of BBO crystal, etc.

Pending Publication Date: 2021-12-03
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these materials have great application value, there are also some shortcomings, such as the phase change problem in the growth process of BBO crystal, the deliquescence problem in CLBO and KDP crystal, the layered growth habit and the high toxicity of raw materials in KBBF crystal, the LN crystal laser low damage threshold

Method used

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  • Compound zinc rubidium germanate nonlinear optical crystal and preparation method and application thereof
  • Compound zinc rubidium germanate nonlinear optical crystal and preparation method and application thereof
  • Compound zinc rubidium germanate nonlinear optical crystal and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Press reactive: RB 2 CO 3 + ZnO + 2Geo 2 → RB 2 ZNGE 2 O 6 + CO 2 ↑ Synthetic Compound RB 2 ZNGE2 O 6 ;

[0050] Put RB 2 CO 3 Zno and Geo 2 Massage 1: 1: 2 is called in a mortar, mix well, ground, then load φ60mm × 60mm open mouth, placed in a muffle, slowly warmed to 350 ° C forgive, constant temperature 24 Hourly, remove moisture and gas, then heated to 750 ° C for forging for forging 24 hours, then put it into the muffle, then heated to 800 ° C for astaining for forging at a time of 48 hours. Polycrystalline powder, using powder X-ray diffraction test analysis, the resulting sample powder X-ray spectrum with zinc 锗 铷 RB 2 ZNGE 2 O 6 The theoretical X-ray spectrum of single crystal structure is consistent, see attached figure 1 ;

[0051] Sending compound 锗 锌 RB 2 ZNGE 2 O 6 Single-phase polycrystalline powder and flux RBF-GEO 2 Mass moon than RB 2 ZNGE 2 O 6 : RBF-GEO 2 = 1: 3, where RBF and GEO 2 The molar ratio is 4: 1, mixed uniform, press, is loaded into a Pt crucib...

Embodiment 2

[0057] Reactive: 2rbno 3 + ZnO + 2Geo 2 → RB 2 ZNGE 2 O 6 + 2NO 2 ↑ + 0.5o 2 ↑ Synthetic Compound RB 2 ZNGE 2 O 6 ;

[0058] RBNO 3 Zno and Geo 2 Mass mole ratio 2: 1: 2 directly weigh the raw material, the raw material and the flux RB will be weighed 2 O-GeO 2 Mass mole is 1: 3 for mixing, where RB 2 O with geo 2 The molar ratio is 4: 1, which is loaded into a platinum crucible of φ60mm × 60 mm, warmed to a temperature of 950 ° C, and the constant temperature is not less than 24 hours, so that the melt mixes, simultaneously, and then cool the temperature and induce spontaneous crystallization;

[0059] Slowly cool down at a temperature reduction rate of 1-5 ° C / h, spontaneous crystallization to obtain zinc 铷 seed crystal crystal crystal;

[0060] Growing crystals in compound melt: RB obtained by spontaneously crystallization 2 ZNGE 2 O 6 Small crystal grains as seed crystals, fixed seed crystals on the seed rod by platinum wire, first charge the seed crystal to 1-2 cm above the...

Embodiment 3

[0064] Press reactive: 2rb (oh) + ZnO + 2Geo 2 → RB 2 ZNGE 2 O 6 + H 2 O ↑ synthetic compound RB 2 ZNGE 2 O 6 ;

[0065] Will RB (OH), ZnO and GEO 2 Mass mole ratio 2: 1: 2 directly weigh the raw material, the raw material and the flux RBF-TEO will be weighed 2 Mass Moss 1: 3 for mixing, where RBF and TEO 2 The molar ratio is 3: 1, which is loaded into a platinum crucible of φ60mm × 60 mm, warmed to 900 ° C, and the constant temperature is not less than 24 hours, so that the melt is mixed, and the PT wire is added, and then the temperature and induces spontaneous crystallization;

[0066] The melt is slowly reduced at a rate of 1-5 ° C / h, and zinc 铷 seed crystal is obtained;

[0067] Growing crystals in compound melt: RB obtained by spontaneously crystallization 2 ZNGE 2 O 6 Small crystal grains as seed crystals, fixed seed crystals on the seed rod by platinum wire, first charge the seed crystal to 1-2 cm above the liquid surface, and then at a higher than saturation point tempe...

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Abstract

The invention discloses a compound zinc rubidium germanate nonlinear optical crystal and a preparation method and application thereof. The chemical formula of the compound is Rb2ZnGe2O6. The preparation method of the compound comprises the steps that raw materials consisting of a rubidium-containing compound, a zinc-containing compound and a germanium-containing compound are evenly mixed and fully ground, the formed mixture is placed in a muffle furnace, water and gas in the raw materials are removed through pre-sintering at a low temperature, then heating for calcination is conducted, and during the period, the mixture is taken out for grinding multiple times and calcination is continued, thereby obtaining the compound zinc rubidium germanate; and the compound and a fluxing agent are further mixed and heated to obtain a mixed solution, and the zinc rubidium germanate nonlinear optical crystal is prepared in a crystal growth furnace. The invention has the technical effects that the obtained crystal has the advantages of excellent thermal stability, wider light transmission range, moderate hardness, stable physical and chemical properties and the like; and the compound zinc rubidium germanate obtained by the method can be used for preparing frequency doubling devices.

Description

Technical field [0001] The present invention relates to chemical formula RB 2 ZNGE 2 O 6 Zinc 铷 and 铷 铷 铷 铷 铷 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 方法 Background technique [0002] Nonlinear optical ((NLO) crystals enable the conversion of laser wavelengths, is a key material for preparing optical devices. Due to high stability and high laser damage threshold, inorganic nonlinear optical crystals are got in military, medical, precision machining and communications. Important application. Currently, the second-order nonlinear optical crystals are used in applications: BBO (β-bab) 2 O 4 ) Crystal, LBO (LIB 3 O 5 ) Crystal, Kbe 2 BO 3 Fly 2 (Kbbf) Crystal, KDP (kh 2 PO 4 ) Crystal, LN (Linbo 3 Crystal and other traditional materials. Although these materials have a significant value, there are also some shortcomings, such as phase change in the growth process, CLBO and KDP crystals have a problem, KBBF crystals have layered growth habits and raw materials, LN crystal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B9/12C30B28/02C30B17/00G02F1/355
CPCC30B29/22C30B9/12C30B28/02C30B17/00G02F1/3551
Inventor 胡章贵韩涛李从刚
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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