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Compound lead chlorate, lead chlorate infrared nonlinear optical crystal, and preparation method and uses of lead chlorate infrared nonlinear optical crystal

A technology of nonlinear optics and compounds, applied in chemical instruments and methods, chloric acid, chlorate, etc., can solve the problems that the research of new frequency conversion crystals needs to be strengthened, and achieve air stability, good thermal stability, and mild experimental conditions Effect

Active Publication Date: 2016-06-01
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 optics, nonlinear optical crystals in the infrared band are a weak link. Therefore, in this band Research on new frequency conversion crystals needs to be strengthened”

Method used

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  • Compound lead chlorate, lead chlorate infrared nonlinear optical crystal, and preparation method and uses of lead chlorate infrared nonlinear optical crystal
  • Compound lead chlorate, lead chlorate infrared nonlinear optical crystal, and preparation method and uses of lead chlorate infrared nonlinear optical crystal
  • Compound lead chlorate, lead chlorate infrared nonlinear optical crystal, and preparation method and uses of lead chlorate infrared nonlinear optical crystal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 (adopting melt method)

[0036] Synthetic lead chlorate (Pb 2.14 OCl 2.28 ) compound:

[0037] Using the solid phase reaction method, according to the chemical equation: 1.14PbCl 2 +PbO→Pb 2.14 OCl 2.28 Synthesis of lead chlorate compounds:

[0038] PbCl 2, PbO was put into a mortar with a stoichiometric ratio of 1.14:1, mixed and carefully ground, then put into a corundum crucible with an opening of Φ400mm×400mm, compacted, put into a muffle furnace, and slowly heated up to 300°C, Constant temperature for 24 hours, take out the crucible after cooling, the sample is relatively loose at this time, then take out the sample and grind it evenly, then put it in the crucible, keep the temperature in the muffle furnace at 430°C for another 48 hours, take it out, put it in the mortar Smash and grind to get the lead chlorate compound, carry out X-ray analysis to this product, the obtained X-ray spectrogram is consistent with that of Pb 2.14 OCl 2.28 The X-r...

Embodiment 2

[0046] According to the reaction formula 1.14PbCl 2 +Pb(CO 3 ) 2 →Pb 2.14 OCl 2.28 +CO 2 ↑ Synthesis of Pb 2.14 OCl 2.28 Compound, specific operation steps are carried out according to embodiment 1;

[0047] Preparation of Pb by Pulling Method 2.14 OCl 2.28 Crystal:

[0048] a, the synthesized Pb 2.14 OCl 2.28 Put the compound into an open platinum crucible of Φ100mm×100mm, heat it to a temperature of 600°C, and keep the temperature constant for 5 hours to obtain a mixed melt of lead chlorate;

[0049] b. Preparation of lead chlorate seed crystals: Slowly lower the mixed melt or mixed melt obtained in step a to room temperature at a rate of 0.5° C. / h, and spontaneously crystallize to obtain lead chlorate seed crystals;

[0050] C, the crucible that fills the mixed melt that step a makes is placed in the crystal growth furnace, the Pb that the seed crystal that step b obtains is cut along the c-axis 2.14 OCl 2.28 The seed crystal is fixed on the lower end of the s...

Embodiment 3

[0053] Embodiment 3 (adopting melt method)

[0054] According to the reaction formula 1.14PbCl 2 +PbC 2 0 4 →Pb 2.14 OCl 2.28 +CO 2 ↑+CO↑ Synthesis of Pb 2.14 OCl 2.28 Compound, specific operation steps are carried out according to embodiment 1;

[0055] Preparation of Pb by Kyropoulos method 2.14 OCl 2.28 Crystal:

[0056] a, the synthesized Pb 2.14 OCl 2.28 The compound is put into a Φ100mm×100mm open platinum crucible and heated to melt, heated to a temperature of 600°C, and kept at a constant temperature for 25 hours to obtain a mixed melt of lead chlorate;

[0057] b. Preparation of lead chlorate seed crystals: Slowly lower the mixed melt obtained in step a to room temperature at a rate of 2° C. / h, and spontaneously crystallize to obtain lead chlorate seed crystals;

[0058] C, the crucible that fills the mixed melt that step a makes is placed in the crystal growth furnace, the Pb that the seed crystal that step b obtains is cut along the c-axis 2.14 OCl 2....

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Abstract

The present invention relates to a compound lead chlorate, a lead chlorate infrared nonlinear optical crystal, and a preparation method and uses of the lead chlorate infrared nonlinear optical crystal. According to the present invention, the chemical formula of the compound is Pb2.14OCl2.28, the molecular weight is 545.802, and the compound is prepared by using a solid-state reaction method; the chemical formula of the compound crystal is Pb2.14OCl2.28, the molecular weight is 545.802, the compound crystal does not have a symmetry center and belongs to an orthorhombic crystal system, the space group is Fmm2, the cell parameters comprise that a is 5.829(3)angstrom, b is 16.056(6)angstrom and c is 35.528(15)angstrom, and the crystal grows by using a compound melt method or adding a co-solvent; the obtained crystal material has a strong phase-matched frequency doubling effect (SHG), the Kurtz powder frequency doubling testing results show that the powder frequency doubling effect of the crystal material is 4 times the frequency doubling effect of potassium dihydrogen phosphate (KDP), the phase matching can be achieved, and the penetration wave band is 0.34-7 [mu]m; the laser damage threshold of the crystal material is 10 times the laser damage threshold of the current commercial infrared nonlinear optical crystal material AgGaS2; and the obtained crystal material does not contain crystalline water, has characteristics of air stability and good thermal stability, and has important application values in the fields of laser frequency conversion, electro-optic modulation, photorefractive information processing, and the like.

Description

technical field [0001] The present invention relates to a kind of compound lead chlorate and infrared nonlinear optical crystal of lead chlorate and preparation method and application, and the chemical formula of this compound is Pb 2.14 OCl 2.28 . 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 pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/14C30B29/22C30B11/00C30B15/00C30B17/00
Inventor 潘世烈张辉张敏
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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