Zirconium fluorine cesium iodate second-order nonlinear optical crystal as well as preparation and application thereof

A second-order nonlinear, cesium zirconium fluoroiodate technology, applied in nonlinear optics, optics, crystal growth and other directions, can solve problems such as infrared nonlinear optical crystal materials that have not yet been seen, and achieve large-scale industrial production, conditions The effect of mild and broad application prospects

Active Publication Date: 2021-02-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In recent years, metal iodates have attracted widespread attention in the field of inorganic nonlinear optical crystal materials due to their excellent properties, such as strong frequency doubling effect, wide transmission band, high laser damage threshold and thermal stability. etc., are a class of nonlinear optical crystal materials that are expected to be practically applied, but there is no literature report on this kind of infrared nonlinear optical crystal material that can be practically applied.

Method used

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  • Zirconium fluorine cesium iodate second-order nonlinear optical crystal as well as preparation and application thereof
  • Zirconium fluorine cesium iodate second-order nonlinear optical crystal as well as preparation and application thereof
  • Zirconium fluorine cesium iodate second-order nonlinear optical crystal as well as preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Hydrothermal synthesis of samples

[0037] Mix zirconium source, cesium source, iodine source, fluorine source, nitric acid or hydrofluoric acid and water according to a certain ratio to form the starting material, seal it in a hydrothermal reaction kettle with polytetrafluoroethylene lining, and heat up to crystallization After constant temperature for a period of time, the temperature of the reaction system is slowly lowered to room temperature at a certain rate, filtered and washed, and colorless blocky cesium zirconium fluoroiodate crystals can be obtained.

[0038] 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.

[0039] Table 1 Correspondence between samples, raw materials and synthesis conditions

[0040]

Embodiment 2

[0042] Crystal structure analysis

[0043] The structures of samples 1# to 6# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0044] 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. Structural analysis was completed using the SHELXTL-97 program package; the position of the heavy atom 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.

[0045] The powder X-ray diffraction test was carried out on t...

Embodiment 3

[0051] UV Diffuse Reflectance Spectroscopy Test

[0052] 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 obvious absorption in the range of 300nm to 2500nm. The compound has a wide optical transmission range and an optical band gap of 4.10eV.

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Abstract

The invention relates to a zirconium fluorine cesium iodate second-order nonlinear optical crystal and preparation and application thereof, the chemical formula of the crystal material is CsZrF4(IO3),the molecular weight is 475.03, the crystal material belongs to an orthorhombic crystal system, the space group is Ima2, the cell parameters are alpha = beta = gamma = 90 degrees and Z = 4, and the cell volume is represented as the specification. Thezirconium fluorine cesium iodate crystal has excellent optical performance: under laser irradiation of 1064 nm, the frequency multiplication intensity of the powder is about 4.5 times of that of a potassium dihydrogen phosphate crystal, and the laser damage threshold of the powder is 6-8 times of that of a commercialized infrared second-order nonlinear material silver gallium sulfur measured by laser with the wavelength of 1064 nm. In addition, the crystal material has a very wide transmission range in an ultraviolet visible light infrared region (0.3-8 microns), and has a wide application prospect 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 optical crystal materials, and relates to a zirconium cesium fluoroiodate second-order nonlinear optical crystal and its preparation and application. 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 in the infrared band are often hindered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/10C30B7/10G02F1/355
CPCC30B7/10C30B29/10G02F1/3551
Inventor 张弛林霖吴超
Owner TONGJI UNIV
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