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Rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material and preparation thereof, and application of rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material in laser frequency conversion

A second-order nonlinear, molybdenum fluorine tellurite technology, applied in nonlinear optics, polycrystalline material growth, optics, etc., can solve the problem of lack of infrared nonlinear optical crystal materials, etc., to achieve phase matching, mild conditions, simple method effect

Active Publication Date: 2021-10-08
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a second-order nonlinear optical crystal material of rubidium molybdenum fluorotellurite and its preparation and application in laser frequency conversion, so as to solve the current problem of lack of practically applicable infrared nonlinear optical crystal materials

Method used

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  • Rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material and preparation thereof, and application of rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material in laser frequency conversion
  • Rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material and preparation thereof, and application of rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material in laser frequency conversion
  • Rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material and preparation thereof, and application of rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material in laser frequency conversion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Hydrothermal synthesis of samples

[0032] Mix molybdenum source, rubidium source, tellurium source, hydrofluoric acid and water in a certain proportion to form the starting material, seal it in a hydrothermal reaction kettle with a polytetrafluoroethylene liner, raise the temperature to the crystallization temperature, and keep the temperature for a period of time Finally, the temperature of the reaction system is slowly lowered to room temperature at a certain rate, filtered and washed, and colorless block rubidium molybdenum fluorotellurite crystals can be obtained.

[0033] The relationship between the types and proportions of raw materials in the initial mixture, crystallization temperature, crystallization time and sample number is shown in Table 1.

[0034] Table 1 Correspondence between samples, raw materials and synthesis conditions

[0035]

[0036]

Embodiment 2

[0038] Crystal structure analysis

[0039] The structures of samples 1# to 6# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0040]The single crystal X-ray diffraction test was carried out on a D8 VENTURE CMOS X-type X-ray single crystal diffractometer from Bruker, Germany. The crystal size is 0.22×0.11×0.05mm 3 ; The data collection temperature is 293K, and the diffraction light source is Mo-Kα ray monochromated by graphite The scanning method is ω; the data is processed by the Multi-Scan method for absorption correction. The structural analysis was completed using the SHELXTL-2017 program package; the position of the heavy atoms was determined by the direct method, and the coordinates of the remaining atoms were obtained by the difference Fourier synthesis method; 2 The full-matrix least-squares method was used to refine all atomic coordinates and anisotropic thermal parameters.

[0041] The powder X-ray diffraction test was carried ou...

Embodiment 3

[0046] UV Diffuse Reflectance Spectroscopy Test

[0047] The diffuse reflection absorption spectrum test of sample 1# was carried out on a Cary 5000 UV-Vis-NIR spectrophotometer of Agilent Corporation, USA. The result is as image 3 shown by image 3 It can be seen that the compound has no significant absorption in the range of 342nm to 2500nm. The compound has a wide optical transmission range and an optical band gap of 3.63eV.

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Abstract

The invention relates to a rubidium molybdenum fluoride tellurite second-order nonlinear optical crystal material and preparation thereof, and application of rubidium molybdenum fluorine tellurite second-order nonlinear optical crystal material in laser frequency conversion. The chemical formula of the crystal material is RbTeMo2O8F; the molecular weight of the crystal material is 551.95; the crystal material belongs to a monoclinic system; the space group of the crystal material is Pn; the cell parameters of the crystal material are that a is equal to 5.55 to 5.73 angstroms, b is equal to 9.18 to 9.30 angstroms,c is equal to 7.44 to 7.57 angstroms, alpha is equal to gamma and equal to 90 degrees, beta is equal to 95.13 to 95.32, and Z is equal to 2; and the cell volume V of the crystal material is equal to 379.1 to 403.4 angstroms<3>.The rubidium molybdenum fluoride tellurite crystal material has excellent optical performance; under irradiation of laser with a wavelength of 1064 nm, the powder frequency doubling strength of the rubidium molybdenum fluoride tellurite crystal material is about 27 times the powder frequency doubling strength of a monopotassium phosphate crystal; and under laser with a wavelength of 2100 nm, the powder frequency doubling strength of the rubidium molybdenum fluoride tellurite crystal material is 2.2 times the powder frequency doubling strength of a potassium titanyl phosphate crystal. In addition, the crystal material has a wide transmission range in a visible light-infrared light region (0.34-5.4 [mu]m), and has wide application prospects in the fields of laser frequency conversion, photoelectric modulation, laser signal holographic storage and the like.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemistry and relates to a second-order nonlinear optical crystal material of rubidium molybdenum fluorotellurite and its preparation and application in laser frequency conversion. Background technique [0002] The second-order nonlinear optical crystal is a photoelectric functional material widely used in the laser field. It has important application value in laser frequency conversion, photoelectric modulation, laser signal holographic storage, and laser communication. At present, the second-order nonlinear optical material that has been practically used is β-barium metaborate (β-BaB 2 o 4 ), lithium borate (LiB 3 o 5 ), Potassium dihydrogen phosphate (KH 2 PO 4 ), potassium titanyl phosphate (KTiOPO 4 ), lithium niobate (LiNbO 3 ), barium titanate (BaTiO 3 ), silver gallium sulfide (AgGaS 2 ), zinc germanium phosphorus (ZnGeP 2 ) etc. Among them, the nonlinear optical materials used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/12C30B7/10G02F1/355
CPCC30B29/12C30B7/10G02F1/3551
Inventor 张弛胡艺蕾吴超
Owner TONGJI UNIV
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