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Two kinds of inorganic fluoroiodate crystals and their preparation method and application

A technology of fluoroiodate and crystals, which is applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems that cannot meet the practical requirements of second-order nonlinear optical crystal materials, are not easy to grow optical quality, and cause laser damage. Low threshold and other issues, to achieve the effect of stable air, mild experimental conditions, and high utilization of raw materials

Active Publication Date: 2018-11-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commercial nonlinear optical crystal materials corresponding to the infrared region, such as AgGaS 2 , AgGaSe 2 and ZnGeP 2 Although the isocrystal has a large second-order nonlinear optical coefficient and a wide transmission range in the infrared region, the synthesis conditions are harsh, and it is not easy to grow large single crystals with high optical quality, especially the laser damage threshold is low. Therefore, it cannot meet the practical needs of second-order nonlinear optical crystal materials in the field of high-intensity lasers

Method used

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  • Two kinds of inorganic fluoroiodate crystals and their preparation method and application
  • Two kinds of inorganic fluoroiodate crystals and their preparation method and application
  • Two kinds of inorganic fluoroiodate crystals and their preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0039] Pre-prepared a mixed solution of 40% hydrofluoric acid and distilled water with a volume ratio of 1:2, 2mmol RbF, 0.5mmol Bi 2 o 3 and 2 mmol H 5 IO 6 Add 23mL of hydrothermal reaction kettle, and then add 3mL of diluent of hydrofluoric acid, so that the final concentration of RbF is 0.667mol / L; put the closed hydrothermal reaction kettle into the muffle furnace, and heat it to 230℃ for 3h , constant temperature reaction for 4 days and then cooling down to room temperature at a cooling rate of 8°C / h; after the reaction, the product was suction filtered and washed with deionized water and ethanol to obtain inorganic fluoroiodate crystals RbBi 2 (IO 3 ) 2 f 5 .

Embodiment 2

[0041] Prepare a mixed solution of hydrofluoric acid with a mass fraction of 40% and distilled water at a volume ratio of 1:1 in advance, and mix 2mmol RbF, 0.5mmol Bi 2 o 3 and 2 mmol H 5 IO 6 Add it into a 23mL hydrothermal reaction kettle, and then add 2mL of hydrofluoric acid diluent to make the final concentration of RbF 1mol / L; put the closed hydrothermal reaction kettle into a muffle furnace, and heat it to 230°C for 3 hours. React at constant temperature for 4 days and then cool down to room temperature at a cooling rate of 8°C / h; after the reaction, the product is suction filtered and washed with deionized water and ethanol to obtain the inorganic fluoroiodate crystal RbBi 2 (IO 3 ) 2 f 5 .

Embodiment 3

[0043] Pre-prepared a mixed solution of hydrofluoric acid with a mass fraction of 40% and distilled water at a volume ratio of 1:1, and mixed 10mmol RbF, 2.5mmol Bi 2 o 3 and 10 mmol H 5 IO 6 Add it into a 100mL hydrothermal reaction kettle, and then add 10mL of hydrofluoric acid diluent to make the final concentration of RbF 1mol / L; put the closed hydrothermal reaction kettle into a muffle furnace, and heat it to 210°C for 3 hours. React at constant temperature for 4 days and then cool down to room temperature at a cooling rate of 1°C / h; after the reaction, the product is suction filtered and washed with deionized water and ethanol to obtain the inorganic fluoroiodate crystal RbBi 2 (IO 3 ) 2 f 5 .

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Abstract

The invention discloses two inorganic crystal compounds as well as a preparation method and application as nonlinear optical crystal materials, wherein the molecular formulas are RbBi2(IO3)2F5 and CsBi2(IO3)2F5, and the two compounds belong to a monoclinic system P21 space group; the cell parameters of RbBi2(IO3)2F5 are as follows: a=5.7357 (9) angstroms, b=5.9059 (10) angstroms, c=15.177 (3) angstroms, alpha=90 degrees, beta=100.263 degrees, and gamma=90 degrees; and the cell parameters of CsBi2(IO3)2F5 are as follows: a=5.750 (2) angstroms, b=5.924 (2) angstroms, c=15.640 (7) angstroms, alpha=90 degrees, beta=100.509 degrees, and gamma=90 degrees. The two inorganic crystal compounds both can be synthesized at relatively low temperature by a hydrothermal process, the synthesis method is simple, and the crystal growth cycle is short; the crystal has a very strong second-order nonlinear optical effect, and phase matching can be realized; a relatively wide light transmitting range is realized in an ultraviolet visible light area and an infrared light area; a relatively large band gap and relatively high thermal stability are realized; and the two compounds can be adopted as nonlinear optical crystal materials to be widely applied to the fields such as optics.

Description

technical field [0001] The invention relates to two kinds of inorganic fluoroiodate nonlinear optical crystal materials and their preparation method and application, which belong to the field of inorganic chemistry, and also belong to the field of material science and optics. Background technique [0002] As a new type of functional material based on the application of laser technology, the second-order nonlinear optical crystal material has nonlinear optical effects such as frequency doubling, sum frequency, difference frequency and optical parametric amplification in information storage, laser technology, atmospheric monitoring, It has important application value in many fields such as communication and national defense and military affairs. In terms of second-order nonlinear optical crystal materials for commercial applications, inorganic nonlinear optical crystal materials occupy a dominant position. According to the application of crystals in different light transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/12C30B7/10
CPCC30B7/10C30B29/12
Inventor 陈兴国刘宏鸣秦金贵
Owner WUHAN UNIV