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Compound SrCdGeS4 and preparation method thereof, and infrared nonlinear optical crystal as well as preparation method and application thereof

A technology of nonlinear optics and compounds, applied in nonlinear optics, germanium compounds, chemical instruments and methods, etc., to achieve the effects of low cost, fast growth, easy processing and preservation

Inactive Publication Date: 2017-05-10
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the Sr / Cd / Ge / S quaternary chalcogenide system, there is no research report so far, and this invention is the first report on the application of chalcogenide in infrared nonlinear optical materials in this system

Method used

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  • Compound SrCdGeS4 and preparation method thereof, and infrared nonlinear optical crystal as well as preparation method and application thereof
  • Compound SrCdGeS4 and preparation method thereof, and infrared nonlinear optical crystal as well as preparation method and application thereof
  • Compound SrCdGeS4 and preparation method thereof, and infrared nonlinear optical crystal as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1 prepares powdery SrCdGeS 4 compound

[0034] Using SrS+CdS+GeS 2 =SrCdGeS 4 Preparation of SrCdGeS by High Temperature Solid State Reaction 4 Compound; The SrS is 5.985 grams, the CdS is 7.224 grams, and the GeS 2 It is 6.837 grams; that is, SrS:CdS:GeS 2 =0.05mol:0.05mol:0.05mol.

[0035] 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 800 °C at a rate of 40 °C / h, and kept for 96 hours. After cooling, the sample was taken out, ground and mixed, and then placed in the quartz tube Vacuum-encapsulated in the middle, sintered in a muffle furnace at 750°C for 48 hours, the sample shrunk into a block; take it out, put it into a mortar, crush and grind it to obtain powdered Sr...

Embodiment 2

[0036] Embodiment 2 prepares powdery SrCdGeS 4 compound

[0037] Using SrS+Cd+Ge+3S=SrCdGeS 4 Preparation of SrCdGeS by High Temperature Solid State Reaction 4 Compound; the SrS is 5.985 grams, the Cd is 5.621 grams, the Ge is 3.631 grams, and the S is 4.810 grams, that is, SrS:Cd:Ge:S=0.05mol:0.05mol:0.05mol:0.15mol ;

[0038] 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, the quartz tube was melted and packaged with a flame, put into a muffle furnace, slowly raised to 850°C, the heating rate was 20°C / h, and kept for 96h, after cooling, the sample was taken out, ground and mixed, and then placed in the quartz tube Vacuum-encapsulated in a tube, sintered in a muffle furnace at 750°C for 48 hours, the sample shrank into a block; it was taken out, crushed and ground in a mortar to obtain powdered SrCdGeS 4 compound.

Embodiment 3

[0039] Embodiment 3 prepares powdery SrCdGeS 4 compound

[0040] Using SrS+Cd+GeS 2 +S=SrCdGeS 4 Preparation of SrCdGeS by High Temperature Solid State Reaction 4 Compound; The SrS is 5.985 grams, the Cd is 5.621 grams, and the GeS 2 is 6.837 grams, and the S is 1.603 grams, namely SrS:Cd:GeS 2 :S=0.05mol:0.05mol:0.05mol:0.05mol;

[0041] 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, the quartz tube was melted and packaged with a flame, put into a muffle furnace, slowly raised to 800°C, the heating rate was 20°C / h, and kept for 96h. After cooling, take it out, take out the sample, grind and mix, and then place Vacuum-encapsulated in a tube, sintered in a muffle furnace at 750°C for 48 hours, the sample shrank into a block; it was taken out, crushed and ground in a mortar to obtain powdered SrCdGeS 4 compound.

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Abstract

The invention discloses a compound SrCdGeS4 and a preparation method thereof, and an infrared nonlinear optical crystal as well as a preparation method and application thereof. A SrCdGeS4 compound pure phase is prepared by adopting a high-temperature solid-phase reaction method through two times of sintering, and the infrared nonlinear optical crystal grows by adopting a horizontal gradient condensation method or a Bridgman method. According to the method disclosed by the invention, the crystal easily grows and has relatively high quality; and the method the advantages of relatively high growth speed, low cost and easiness of obtaining crystals with relatively large sizes. An infrared nonlinear powder frequency doubling test shows that under the irradiation of fundamental frequency light which is 2090nm laser, the SrCdGeS4 has a very high nonlinear effect; and the frequency doubling signal intensity in a grain diameter range of 41mu m-74mu m is about three times of the signal intensity of an infrared classic material AgGaS2 with the same grain diameter. An infrared nonlinear optical crystal material SrCdGeS4 obtained by the invention has a potential application value in the field of infrared laser frequency conversion.

Description

technical field [0001] The present invention relates to the field of inorganic materials, more specifically, the present invention relates to powdery compound SrCdGeS 4 And preparation method thereof, with powdery compound SrCdGeS 4 The obtained infrared nonlinear optical crystal, its preparation method and application. Background technique [0002] Laser is one of the greatest inventions of mankind in the last century, born in 1960. With the emergence of lasers, a series of novel optical phenomena have been discovered one after another, and the nonlinear optical effect is one of them. In 1961, Franken irradiated a ruby ​​laser on a quartz crystal and observed the nonlinear optical frequency doubling effect for the first time, which opened the prelude to the research of nonlinear optical materials. After decades of development, nonlinear optical crystals have developed into a class of important optoelectronic functional materials that are closely integrated with laser tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G17/00C30B29/46C30B11/02G02F1/35G02F1/355
CPCC01G17/006C01P2002/72C01P2002/77C30B11/02C30B29/46G02F1/353G02F1/3551
Inventor 尹文龙余盛全唐明静张羽袁泽锐窦云巍方攀陈莹谢婧康彬邓建国
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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