Intermediate infrared nonlinear optical crystal material RbIO2F2 as well as preparation method and application of crystal material

A technology of nonlinear optics and crystal materials, applied in the growth of polycrystalline materials, chemical instruments and methods, crystal growth, etc., can solve the problems that the research of new frequency conversion crystals needs to be strengthened, and achieve high laser damage threshold and thermal stability, The effect of high product purity and simple operation

Inactive Publication Date: 2015-05-13
WUHAN UNIV
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  • Abstract
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Problems solved by technology

In the book "Nonlinear Optical Crystal Materials Science" published by Science Press in 2003, it was clearly stated that "in the entire spectral band of nonlinear opt

Method used

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  • Intermediate infrared nonlinear optical crystal material RbIO2F2 as well as preparation method and application of crystal material
  • Intermediate infrared nonlinear optical crystal material RbIO2F2 as well as preparation method and application of crystal material
  • Intermediate infrared nonlinear optical crystal material RbIO2F2 as well as preparation method and application of crystal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 3 mmol RbIO 3 Adding 3 milliliters of 40% HF aqueous solution into a polytetrafluoroethylene-lined reactor, sealing, reacting at 230 degrees Celsius for 24 hours, then sealing and cooling for 3 days, the colorless transparent filtrate obtained at room temperature Slowly volatilize to obtain colorless blocky crystals, filter them with suction, and dry them to obtain mid-infrared nonlinear optical crystal materials.

Embodiment 2

[0031] 3 mmol RbIO 3 Add 10 ml of HF aqueous solution with a mass fraction of 30% into a reaction kettle, seal and react at 230 degrees Celsius for 24 hours, then seal and cool down for 10 days, place the reaction solution at room temperature to volatilize freely, and wait until the liquid volatilizes completely to obtain The colorless blocky crystals were suction filtered and dried to obtain a mid-infrared nonlinear optical crystal material.

Embodiment 3

[0033] 3 mmol RbIO 3 Add 30 milliliters of mass fraction and be filled in the reaction kettle of 50% HF aqueous solution, seal and react at 230 degrees Celsius for 24 hours, then seal and cool down for 10 days to obtain a colorless and transparent filtrate; open the reaction kettle, and place the colorless and transparent filtrate in Volatilize at room temperature to obtain colorless massive crystals, filter them with suction, and dry them to obtain mid-infrared nonlinear optical crystal materials.

[0034] In the above embodiment, the molar number that needs to satisfy HF is RbIO 3 More than twice the number of moles. At room temperature, RbIO 3 The reaction with HF aqueous solution is slow, and the reaction process can be accelerated under high temperature and high pressure, and the generation of crystals can be accelerated. Preferably, it is best to react at 230 degrees Celsius for 24 hours after sealing; when the volume of HF aqueous solution is too large, the volatiliza...

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Abstract

The invention discloses an intermediate infrared nonlinear optical crystal material having the chemical formula of RbIO2F2. The crystallographic space group of the material is Pca21 and the cell parameters are as follows: a=8.567(4) angstroms, b=6.151(3) angstroms, c=8.652(4) angstroms, alpha=beta=gamma=90 degrees, and z=4. The invention also provides a hydrothermal preparation method of the crystal material. The intermediate infrared nonlinear optical crystal material prepared has a quite strong phase-matching second harmonic generation (SHG); the result of a Kurtz powder SHG test indicates that the powder SHG of the crystal material is four times that of potassium dihydrogen phosphate (KDP); the laser-damagedthreshold of the crystal material is at least 700MW/cm<2>, which is more than 23 times the laser-damagedthreshold of the existing commercial intermediate infrared nonlinear optical crystal material AgGaS2; the crystal material has a relatively wide transmission range within the visible region and the intermediate infrared region, and the complete transmission waveband is 0.29-12 microns; the crystal material contains no crystal water, and is stable in air and good in thermal stability; in addition, a single crystal material can be prepared by use of a simple solvent evaporation method.

Description

technical field [0001] The invention relates to the field of inorganic chemistry, in particular to a mid-infrared nonlinear optical crystal material and its preparation method and application. Background technique [0002] Nonlinear optical effects originate from the interaction between laser and medium. When the laser propagates in a medium with non-zero second-order polarizability, nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and optical parametric amplification will occur. 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. In many fields, such as laser technology, atmospheric monitoring, national defense and military, etc., All have important application value. Inorganic nonlinear optical materials play a dominant role in the practical research of second-order nonlinear optical materia...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B7/10C01B11/22
Inventor 吴奇秦金贵
Owner WUHAN UNIV
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