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Nonlinear optical crystal bismuth potassium iodide, and preparation method and application thereof

A second-order nonlinear, crystal technology, used in inorganic crystal compounds and their preparation methods and applications, in the field of materials science and optics, can solve the problem of materials that cannot meet the practical requirements of second-order nonlinear optical crystal materials, and is not easy to grow optical quality. , harsh synthesis conditions and other problems, to achieve the effect of air stability, mild experimental conditions, and high utilization of raw materials

Inactive Publication Date: 2014-04-30
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the existing infrared second-order nonlinear optical crystal materials, such as AgGaS 2 , AgGaSe 2 and ZnGeP 2 Although such crystals have 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 with a low damage threshold. Therefore, it cannot meet the practical requirements of second-order nonlinear optical crystal materials.

Method used

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  • Nonlinear optical crystal bismuth potassium iodide, and preparation method and application thereof
  • Nonlinear optical crystal bismuth potassium iodide, and preparation method and application thereof
  • Nonlinear optical crystal bismuth potassium iodide, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 6 mmol KIO 4 , 6 mmol KCl, 1 mmol Bi 2 O 3 And 6 mmol H 5 IO 6 Add 23 mL of hydrothermal reaction kettle, then add 3 mL of distilled water to make KIO 4 The final concentration is 2 mol / L; put the closed hydrothermal reactor into the muffle furnace, heat it to 225°C for 3 hours, react at a constant temperature for 4 days and then cool to room temperature at a cooling rate of 2°C / h; After the end, the product is placed in an ultrasonic cleaner, washed with distilled water, filtered, and then rinsed with ethanol to obtain colorless rod-shaped crystal particles K 2 BiI 5 O 15 .

Embodiment 2

[0029] Add 6 mmol KIO 4 , 12 mmol KCl, 1 mmol Bi 2 O 3 And 6 mmol H 5 IO 6 Add 23 mL of hydrothermal reaction kettle, then add 3 mL of distilled water to make KIO 4 The final concentration is 2 mol / L; put the closed hydrothermal reactor into the muffle furnace, heat it to 230°C for 3h, react at a constant temperature for 5 days and then cool to room temperature at a cooling rate of 6°C / h; After the end, the product is placed in an ultrasonic cleaner, washed with distilled water, filtered, and then rinsed with ethanol to obtain colorless rod-shaped crystal particles K 2 BiI 5 O 15 .

Embodiment 3

[0031] Add 6 mmol KIO 4 , 6 mmol KCl, 1 mmol Bi 2 O 3 And 6 mmol H 5 IO 6 Add 23 mL of hydrothermal reaction kettle, then add 3 mL of distilled water to make KIO 4 The final concentration is 2 mol / L; put the airtight hydrothermal reactor into the muffle furnace, heat it to 228°C for 3h, react at a constant temperature for 6 days and then cool to room temperature naturally; after the reaction, place the product in ultrasonic Wash with distilled water, filter, and then rinse with ethanol in the washer to obtain colorless rod-like crystal particles K 2 BiI 5 O 15 .

[0032] The frequency doubling performance of the inorganic crystal compound prepared by the invention is obtained by the Kurtz powder frequency doubling test method. The specific operation steps are as follows: the obtained colorless rod-shaped crystal particles are first ground into powder with a particle size of 100-125 microns, and then put into a sample cell with glass windows on both sides, and then the sample cell ...

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Abstract

The invention discloses a novel inorganic compound K2BiI5O15, and a preparation method, properties and application thereof as a second-order nonlinear optical crystal material. The outstanding characteristics of the material are that KIO4, KCl, Bi2O3 and H5IO6 are adopted as initial reactants for the first time to prepare the material in a hydrothermal method; the material has a stronger phase-matching second-order nonlinear optical effect, a broad light transmitting window in the visible region and the middle infrared region, a larger band gap and higher heat stability; the preparation method is easy to operate, high in raw material utilization rate, mild in experiment condition and high in product purity; the crystal material can be widely applied in the field of optics.

Description

[0001] Technical field [0002] The invention relates to an inorganic crystal compound and a preparation method and application thereof, and belongs to the field of inorganic chemistry, as well as the field of materials science and optics. Background technique [0003] The nonlinear optical effect originates from the interaction between the laser and the medium. When the laser propagates in a medium with a non-zero second-order polarizability, it will produce nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and optical parametric amplification. Using the second-order nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, frequency converters, and optical parametric oscillators can be made, which are important in many fields such as laser technology, atmospheric monitoring, and national defense. Application value. Inorganic nonlinear optical materials play a leading role in the practical resear...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B7/14G02F1/355
Inventor 黄印陈兴国秦金贵
Owner WUHAN UNIV
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