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Novel infrared nonlinear optical material and preparation method and application thereof

A nonlinear optics and infrared technology, applied in the fields of nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems that cannot meet the practical requirements of nonlinear optical crystal materials, it is not easy to grow large single crystals with optical quality, and the synthesis conditions are harsh and other problems, to achieve the effect of stable air, mild conditions and good thermal stability

Inactive Publication Date: 2016-05-11
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For infrared nonlinear optical crystal materials, there is still a gap from practicality
The reason is that existing infrared 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 the damage threshold is low. Therefore, it cannot meet the practical requirements of nonlinear optical crystal materials.

Method used

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  • Novel infrared nonlinear optical material and preparation method and application thereof
  • Novel infrared nonlinear optical material and preparation method and application thereof
  • Novel infrared nonlinear optical material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: RbHgI 3 Preparation of:

[0027] 0.2124g (1mmol) RbI and 0.4544g (1mmol) HgI 2 Add it into an appropriate amount of ethanol solution, stir at 80 degrees Celsius until it becomes a clear and transparent solution, continue to react for 24 hours, and cool naturally after the reaction is completed. Through the slow volatilization method at room temperature or the slow cooling method, yellow transparent crystals are obtained, which is the desired crystal material.

Embodiment 2

[0028] Example 2: RbHgI 3 The frequency doubling effect of the powder:

[0029] The frequency doubling performance of the material is obtained by the Kurtz-Perry powder frequency doubling test method. The specific operation steps are as follows:

[0030] Grind the obtained second-order nonlinear optical crystal material into a powder with a particle size of about 80-100 microns, and then install it in a sample cell with glass windows on both sides, then place the sample cell on the laser optical path, and use Nd:YAG pulsed laser to The light source produces fundamental frequency light with a wavelength of 1064 nanometers and injects it into the sample cell. The KDP single crystal powder with a particle size of about 80-100 microns is used as a standard sample, and the signal is displayed on the oscilloscope through a photomultiplier tube.

Embodiment 3

[0031] Example 3: RbHgI 3 Phase matching test for frequency doubling effect:

[0032] The obtained second-order nonlinear optical crystal materials were respectively ground and sieved into powders of different particle size ranges (20-40, 40-60, 60-80, 80-100, 100-125, 125-150, 150-200 and 200-300 Micron), and then installed in the sample cell with glass windows on both sides, then put the sample cell on the laser optical path, use Nd:YAG pulsed laser as the light source to generate fundamental frequency light with a wavelength of 1064 nanometers into the sample cell, and the signal is photoelectrically multiplied The tube is displayed on the oscilloscope, and the intensity of the frequency-multiplied signal of different particle sizes is tested. After drawing, analyze and judge whether the compound can be phase-matched.

[0033] figure 1 is RbHgI 3 The stick model diagram of the crystal, in which the rubidium atoms are disordered, and the mercury and four iodine atoms form...

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Abstract

The invention discloses a novel infrared nonlinear optical material. The molecular formula of the novel infrared nonlinear optical material is RbHgI3, a crystal is an orthorhombic system, a space group is Ama2(No.40), and main crystallographic parameters include a=8.838(3) , b=9.824(3) , c=11.050(3) , alpha=beta=gamma=90.00oand Z=4. The material has the outstanding advantages that the material has a high phase-matched second-order non-linear optical coefficient; wide light-transmitting windows are arranged in an ultraviolet region, a visible region and an infrared region; good thermal stability is achieved. A synthetic method includes adding RbI and HgI2 in the molar ratio of 1:1 into an organic solvent, stirring at the temperature of 80 DEG C till clear and transparent solution is formed, and continuing to stir for 24 hours; after reaction, cooling naturally; performing slow evaporation or slow cooling at the room temperature to obtain a yellow transparent crystal. The novel infrared nonlinear optical material has the advantages of simplicity in operation, mild experimental conditions, high product purity, capability of obtaining the crystal of a compound by utilizing the simple solvent, and the like; the crystal material can be widely applied to the optical field and the like.

Description

technical field [0001] The invention relates to a novel infrared nonlinear optical material and its preparation method and application, belonging to the field of inorganic chemistry, and also belongs to the field of material science and optics. Background technique [0002] Using the second-order nonlinear optical effect of crystals with non-centrosymmetric structure, nonlinear optical devices such as second harmonic generators, frequency converters, and optical parametric oscillators can be made. In many fields, such as laser technology, information technology and It has important application value in national defense and military affairs. Inorganic nonlinear optical materials play a dominant role in the practical research of second-order nonlinear optical materials. According to the light transmission band and scope of application, inorganic nonlinear optical crystal materials can be divided into ultraviolet region nonlinear optical crystal materials, visible light region...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B7/14G02F1/355
CPCC30B29/12C30B7/14G02F1/3551
Inventor 李艳军李轩科丁宇寻董志军丛野张江袁观明崔正威
Owner WUHAN UNIV OF SCI & TECH
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