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Inorganic compound k2au(io3)5 with non-central structure, its preparation method and use

A technology of inorganic compounds and mixtures, applied in chemical instruments and methods, nonlinear optics, optics, etc., to achieve the effects of phase matching, simple process, and high thermal stability

Active Publication Date: 2018-03-09
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This crystalline material has not been reported so far

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  • Inorganic compound k2au(io3)5 with non-central structure, its preparation method and use
  • Inorganic compound k2au(io3)5 with non-central structure, its preparation method and use
  • Inorganic compound k2au(io3)5 with non-central structure, its preparation method and use

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1 adopts hydrothermal synthesis to synthesize inorganic compound K 2 Au(IO 3 ) 5 the crystal

[0040] The raw material mixture obtained by mixing the raw materials according to a certain ratio is sealed in a 23mL polytetrafluoroethylene-lined hydrothermal reaction kettle, put into a box-type resistance furnace, crystallized at the crystallization temperature for a period of time, and then slowly lowered the temperature. After filtering, washing and drying, a yellow transparent K 2 Au(IO 3 ) 5 crystals. The types of raw materials contained in the raw material mixture, the ratio of each raw material, the crystallization temperature, the relationship between the crystallization time and the sample number are shown in Table 1.

[0041] Table 1K 2 Au(IO 3 ) 5 The relationship between synthesis conditions and sample numbers

[0042]

Embodiment 2

[0043] Embodiment 2 inorganic compound K 2 Au(IO 3 ) 5 Analysis of the crystal structure of

[0044] The structures of samples 1# to 6# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0045] Wherein, the single crystal X-ray diffraction is carried out on a SuperNova Dual Wavelength CCD type X-ray single crystal diffractometer of Agilent Company. The crystal size is 0.16×0.13×0.09mm 3 ; The data collection temperature is 295K, and the diffraction light source is monochromatic Mo-Kα rays The data were processed with absorption correction using the Multi-Scan method. Structural analysis was completed using the SHELXTL-97 program package; the position of the heavy atom was determined by the direct method, and the coordinates of the remaining atoms were obtained by the difference Fourier synthesis method; 2 The full-matrix least-squares method was used to refine all atomic coordinates and anisotropic thermal parameters.

[0046] Powder X-ra...

Embodiment 3

[0054] Embodiment 3 frequency doubling test experiment and result

[0055] The frequency doubling test experiment of sample 1# is as follows: the laser with a wavelength of 2.05 μm generated by a Q-switched Nd: YAG solid-state laser with a frequency converter is used as the fundamental frequency light, and the crystal powder to be tested is irradiated. The generated second harmonic is displayed with an oscilloscope. The crystal sample to be tested and the standard sample KTiOPO 4 The crystals are ground separately, and the crystals with different particle sizes are sieved out with standard sieves. Observe the change trend of the multiplier signal with the particle size, and judge whether it can achieve phase matching. Under the same test conditions, compare the intensity of the second harmonic generated by the sample to be tested with that of the reference crystal KTiOPO 4 The intensity of the second harmonic generated, thus obtaining the relative size of the frequency doub...

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Abstract

The invention relates to an inorganic compound with a non-heart structure, and a preparation method and an application thereof as a nonlinear optical crystal. The crystal has a chemical formula of K2Au(IO3)5, belongs to an orthorhombic crystal system, has a space group of C[mc]2[1], and has crystal cell parameters of a=11.5949(8) angstroms, b=11.6905(6) angstroms, c=11.4716(6) angstroms, alpha=beta=gamma=90 DEG and Z=4. The yellow K2Au(IO3)5 crystal is prepared by a hydrothermal method. The powder frequency-doubling effect of the K2Au(IO3)5 crystal is 1.0 time that of KTiOPO4.

Description

technical field [0001] The invention relates to a novel nonlinear optical crystal material. Background technique [0002] Nonlinear optical crystals are a class of functional materials widely used in the field of optoelectronic technology, which can realize laser frequency conversion, modulation of laser intensity and phase, and holographic storage of laser signals. At present, the research on inorganic nonlinear optical materials mainly focuses on borate, phosphate, iodate and other systems, such as the commercial nonlinear optical crystal KH 2 PO 4 (abbreviated as KDP), KTiOPO 4 (abbreviated as KTP), LiB 3 o 5 (abbreviated as LBO), β-BaB 2 o 4 (abbreviated as BBO), α-LiIO 3 Wait. Among them, the iodate system due to the asymmetric IO in the structure 3 Cells contain lone pairs of electrons and often exhibit extremely strong nonlinear optical effects, attracting extensive research interest. In recent years, researchers will have distorted MO 6 d of the octahedral...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/22C30B7/10G02F1/355
CPCC30B7/10C30B29/22G02F1/3551
Inventor 毛江高徐翔
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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