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Sulfur germanium gallium lead compound, sulfur germanium gallium lead crystal, preparation method and use thereof

A lead compound and crystal technology, applied in the field of sulfur germanium gallium lead compound and its preparation, sulfur germanium gallium lead infrared nonlinear optical crystal and its preparation field, can solve the problems of difficult crystal growth, residual absorption, lack of nonlinear crystal materials and the like , to achieve the effect of easy processing and preservation, fast growth, and easy crystal growth

Active Publication Date: 2019-06-21
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, research on nonlinear optical crystals in the infrared band is still relatively scarce, and only ZGP (ZnGeP 2 ), AGS (AgGaS 2 ) and AGSe (AgGaSe 2 ) and a few
At the same time, these crystals also have serious disadvantages. For example, AGS and AGSe have large anisotropic thermal expansion, and it is difficult to grow high-quality and large-sized crystals; coupled with low thermal conductivity, strong thermal gradients will be generated when high-power pumps are used. The laser damage threshold is extremely low due to the thermal lens effect, and cannot be used for high-power infrared laser output; ZGP crystal is currently the best material for generating 3-5 μm infrared laser light, but its crystal growth is extremely difficult, and there are unavoidable defects in the near-infrared region. The serious, severe residual absorption makes it necessary to use a laser with a wavelength greater than 2 μm for pumping
The above shortcomings seriously limit the practical application of the above-mentioned infrared crystals; in addition, there is still a lack of nonlinear crystal materials with excellent performance in the 8-12 μm infrared band
The recently discovered new infrared nonlinear crystal BGS (BaGa 4 S 7 ) and BGSe (BaGa 4 Se 7 ) is still in the stage of laboratory development, and the specific practical value and application band need to be further studied

Method used

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  • Sulfur germanium gallium lead compound, sulfur germanium gallium lead crystal, preparation method and use thereof
  • Sulfur germanium gallium lead compound, sulfur germanium gallium lead crystal, preparation method and use thereof
  • Sulfur germanium gallium lead compound, sulfur germanium gallium lead crystal, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Using PbS+Ga 2 S 3 +Ge+2S=PbGa 2 GeS 6 The reaction formula is to prepare sulfur germanium gallium lead compound by high temperature solid state reaction method;

[0041] The PbS is 11.964 g, the Ga 2 S 3 Be 11.782 grams, described Ge is 3.631 grams, and described S is 3.207 grams; That is PbS:Ga 2 S 3 :Ge:S=0.05mol:0.05mol:0.05mol:0.10mol;

[0042] The specific operation steps are: weigh the reagents according to the above dosage in the glove box, put them into a mortar, mix and grind them, then put them into a Φ19mm×25mm quartz tube, and evacuate them to 10 -3 After Pa, the quartz tube was melted and packaged with a hydrogen-oxygen flame, put into a muffle furnace, raised to 700°C at a rate of 40°C / h, and kept at a temperature of 96h. Powdered PbGa 2 GeS 6 compound.

Embodiment 2

[0044] Using PbS+2Ga+Ge+5S=PbGa 2 GeS 6 The reaction formula is to prepare sulfur germanium gallium lead compound by high temperature solid state reaction method;

[0045] The PbS is 11.964 grams, the Ga is 6.972 grams, the Ge is 3.631 grams, and the S is 8.017 grams; that is, PbS:Ga:Ge:S=0.05mol:0.10mol:0.05mol:0.25mol;

[0046] The specific operation steps are to weigh the reagents in the glove box according to the above dosage, mix them, and then put them into a quartz tube of Φ19mm×25mm, and vacuumize to 10 -3 After Pa, the quartz tube was melted and packaged with a hydrogen-oxygen flame, put into a muffle furnace, raised to 800°C at a rate of 30°C / h, and kept at a temperature of 96h. After cooling, the sample was taken out, crushed and ground in a mortar to obtain Powdered PbGa 2 GeS 6 compound.

Embodiment 3

[0048] Using Pb+2Ga+Ge+6S=PbGa 2 GeS 6 The reaction formula is to prepare sulfur germanium gallium lead compound by high temperature solid state reaction method;

[0049] The Pb is 10.36 grams, the Ga is 6.972 grams, the Ge is 3.631 grams, and the S is 9.620 grams; that is, Pb:Ga:Ge:S=0.05mol:0.10mol:0.05mol:0.30mol;

[0050] The specific operation steps are to weigh the reagents in the glove box according to the above doses, put them into a Φ19mm×25mm quartz tube, and evacuate to 10 -3 After Pa, melt and package the quartz tube with a flame, put it into a muffle furnace, and slowly raise it to 800°C with a heating rate of 30°C / h, keep it warm for 96h, take it out after cooling, put it in a mortar, crush and grind it to get a powder PbGa 2 GeS 6 compound.

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Abstract

The invention discloses a sulfur-gallium-germanium-lead compound having a chemical formula of PbGa2GeS6, a preparation method of the sulfur-gallium-germanium-lead compound, a sulfur-gallium-germanium-lead crystal having a chemical formula of PbGa2GeS6, and a preparation method and application of the sulfur-gallium-germanium-lead crystal. The sulfur-gallium-germanium-lead infrared non-linear optical crystal easily grows up and is not coated during growth, and has the advantages of relatively high growing speed and low cost, and crystal with relatively large size can be easily obtained; the sulfur-gallium-germanium-lead infrared non-linear optical crystal has the advantages of relatively wide infrared transmission region, good mechanical performance and the like and is easy to process and store; and the sulfur-gallium-germanium-lead crystal can be used for manufacturing infrared laser frequency converters.

Description

technical field [0001] The invention relates to the field of inorganic materials, in particular to a sulfur germanium gallium lead compound and a preparation method thereof, a sulfur germanium gallium lead infrared nonlinear optical crystal, a preparation method and an application thereof. Background technique [0002] The second-order nonlinear optical crystal is a kind of important photoelectric functional material that is closely integrated with laser technology. This type of crystal can adjust the frequency of commercial lasers through nonlinear effects such as frequency doubling, difference frequency, sum frequency and optical parametric oscillation. , produce a new laser source, and greatly expand the application range of laser. For example, using a suitable frequency doubling crystal, the Nd:YAG (output wavelength is 1064nm) laser can be frequency doubled to produce a laser with a wavelength of 532nm; the 2.1μm laser can be frequency doubled to produce a laser with a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/46C30B11/00G02F1/355C01G21/00
CPCC01G21/006C01P2002/72C30B11/003C30B29/46G02F1/3551
Inventor 尹文龙余盛全张羽谢婧窦云巍袁泽锐唐明静方攀陈莹康彬
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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