Fluoro mixed metal salt nonlinear optical crystal material as well as preparation and application thereof

A technology of nonlinear optics and mixed metals, applied in nonlinear optics, polycrystalline material growth, optics, etc., can solve the problem of lack of infrared nonlinear optical crystal materials, achieve wide transmission range, high laser damage threshold, good Effects of Nonlinear Optical Properties

Inactive Publication Date: 2020-10-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the current lack of practically applicable infrared nonlinear optical crystal materials, and provide a fluorinated mixed metal salt Ba(MoO 2 f) 2 (XO 3 ) 2 Infrared nonlinear optical crystal materials and their preparation and application

Method used

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  • Fluoro mixed metal salt nonlinear optical crystal material as well as preparation and application thereof
  • Fluoro mixed metal salt nonlinear optical crystal material as well as preparation and application thereof
  • Fluoro mixed metal salt nonlinear optical crystal material as well as preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix the barium source, molybdenum source, X source, fluorine source and water in a certain proportion to form the initial mixed raw 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 , the temperature of the reaction system is slowly lowered to room temperature at a certain rate, filtered and washed, and the target crystal can be obtained.

[0036] Table 1 shows the relationship between the type and proportion of each component in the initial mixed raw material, crystallization temperature, crystallization time and sample number.

[0037] Table 1 Correspondence between samples, raw materials and synthesis conditions

[0038]

[0039] Crystal structure analysis of 1#~2# samples:

[0040] The structures of samples 1# to 2# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0041] The single cryst...

Embodiment 2

[0059] Fluorinated mixed metal salt nonlinear optical crystal material, the chemical formula of the crystal material is Ba(MoO 2 F) 2 (XO 3 ) 2 , belongs to the orthorhombic crystal system, and the space group is Aba2; among them, X is Se, and the chemical formula of the crystal material is Ba(MoO 2 F) 2 (SeO 3 ) 2 .

[0060] Ba(MoO 2 F) 2 (SeO 3 ) 2 The cell parameters of are: α=β=γ=90°, Z=4, the unit cell volume is:

[0061] The preparation method of the optical crystal material comprises the following steps:

[0062] (1) Mix barium source, molybdenum source, X source, fluorine source and water to form initial mixed raw materials;

[0063] (2) Crystallize the initial mixed raw materials under hydrothermal conditions to obtain the fluorinated mixed metal salt nonlinear optical crystal material.

[0064] Wherein, in step (1), the barium source is barium fluoride, the molybdenum source is molybdenum trioxide, and the X source is SeO 2 , the fluorine source i...

Embodiment 3

[0068] Fluorinated mixed metal salt nonlinear optical crystal material, the chemical formula of the crystal material is Ba(MoO 2 F) 2 (XO 3 ) 2 , belongs to the orthorhombic crystal system, and the space group is Aba2; among them, X is Te, and the chemical formula of the crystal material is Ba(MoO 2 F) 2 (TeO 3 ) 2 .

[0069] Ba(MoO 2 F) 2 (TeO 3 ) 2 The cell parameters of are: α=β=γ=90°, Z=4, the unit cell volume is:

[0070] The preparation method of the optical crystal material comprises the following steps:

[0071] (1) Mix barium source, molybdenum source, X source, fluorine source and water to form initial mixed raw materials;

[0072] (2) Crystallize the initial mixed raw materials under hydrothermal conditions to obtain the fluorinated mixed metal salt nonlinear optical crystal material.

[0073] Wherein, in step (1), the barium source is barium carbonate, the molybdenum source is molybdenum trichloride, and the X source is TeO 2 , the source of fluor...

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Abstract

The invention relates to a fluoro mixed metal salt nonlinear optical crystal material and preparation and application thereof. The chemical formula of the crystal material is Ba(MoO2F)2(XO3)2, and X is Se or Te. Compared with the prior art, the crystal material has excellent nonlinear optical performance, the frequency multiplication intensity of the powder can reach 3-4 times of that of KH2PO4 crystals with the same particle size under 1064nm laser irradiation, and the laser damage threshold measured under laser with the wavelength of 1064nm is 53-60 times of that of a commercialized infraredsecond-order nonlinear material AgGaS2. In addition, the crystal material is excellent in transmission performance in an ultraviolet-visible light region and an infrared region (0.3-10 [mu]m), 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 fields of inorganic chemistry, crystallography and nonlinear optical materials, and relates to a fluorinated mixed metal salt Ba(MoO 2 f) 2 (XO 3 ) 2 Nonlinear optical crystal materials and their preparation and applications. Background technique [0002] Second-order nonlinear optical crystals are a class of photoelectric functional materials widely used in the laser field, and have important application values ​​in laser frequency conversion, photoelectric modulation, laser signal holographic storage, and laser communication. Generally speaking, an ideal nonlinear optical crystal must meet the following conditions: (1) large nonlinear optical coefficient; (2) achieve phase matching; (3) wide optical transmission range; (4) high laser damage threshold ; (5) good physical and chemical stability and mechanical properties. At present, the second-order nonlinear optical materials that have been practically used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B7/10G02F1/355
CPCC30B7/10C30B29/22G02F1/3551
Inventor 张弛林霖吴超
Owner TONGJI UNIV
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