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Li2In2SiSe6 compound and Li2In2SiSe6 nonlinear optical crystal as well as preparation methods and applications thereof

A nonlinear optics, compound technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems affecting practical use, low light damage threshold, slow development of nonlinear crystals, etc.

Inactive Publication Date: 2013-09-11
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of nonlinear crystals in the infrared band is relatively slow; the materials in the infrared region are mostly ABC 2 Type chalcopyrite structure semiconductor materials, such as AgGaQ 2 (Q=S, Se, Te), the light damage threshold of infrared nonlinear crystal is too low and the crystal growth is difficult, which directly affects the practical use

Method used

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  • Li2In2SiSe6 compound and Li2In2SiSe6 nonlinear optical crystal as well as preparation methods and applications thereof
  • Li2In2SiSe6 compound and Li2In2SiSe6 nonlinear optical crystal as well as preparation methods and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, prepare powdery Li 2 In 2 SiSe 6 Compound:

[0040] Using (1)Li 2 Se+In 2 Se 3 +SiSe 2 = Li 2 In 2 SiSe 6 The reaction formula is to prepare Li by solid-state reaction method 2 In 2 SiSe 6 Compound; The Li 2 Se is 1.857 g, the In 2 Se 3 9.330 g, the SiSe 2 It is 3.720 grams; that is, Li 2 Se:In 2 Se 3 : SiSe 2 =0.02mol:0.02mol:0.02mol;

[0041] The specific operation steps are: weigh the reagents according to the above dosage in the glove box, put them into the mortar, mix and carefully grind them, then put them into a quartz tube of Φ12mm×16mm, and evacuate them to 10 -3 After pa, melt and seal the quartz tube with a hydrogen-oxygen flame, put it into a muffle furnace, slowly raise it to 800°C, and keep the temperature constant for 48-72 hours. Vacuum packaging, sintering in a muffle furnace at 750 ° C for 48 hours, take it out, put it in a mortar, smash and grind it to get powdery Li 2 In 2 SiSe 6 compound.

Embodiment 2

[0042] Embodiment 2, prepare powdery Li 2 In 2 SiSe 6 Compound:

[0043] Using Li 2 Se+2In+Si+5Se=Li 2 In 2 SiSe 6 The reaction formula is to prepare Li by solid-state reaction method 2 In 2 SiSe 6 Compound; The Li 2 Se is 1.857 grams, the In is 4.593 grams, the Si is 0.562 grams, and the Se is 7.896 grams, namely Li 2 Se:In:Si:Se=0.02mol:0.04mol:0.02mol:0.10mol;

[0044] The specific operation steps are: weigh the reagents according to the above dosage in the glove box, put them into the mortar, mix and carefully grind them, then put them into a Φ12mm×16mm quartz tube, and vacuumize to 10 -3 After pa, the quartz tube was melted and packaged with a flame, put into a muffle furnace, and slowly raised to 850°C, the heating rate was 10°C / hour, and the temperature was kept constant for 48 hours. Vacuumize and seal in a quartz tube, sinter in a muffle furnace at 800°C for 48 hours, take it out, put it in a mortar, grind and grind it to prepare powdered Li 2 In 2 SiSe ...

Embodiment 3

[0045] Embodiment 3, prepare powdery Li 2 In 2 SiSe 6 Compound:

[0046] Using Li 2 Se+In 2 Se 3 +Si+2Se=Li 2 In 2 SiSe 6 The reaction formula is to prepare Li by solid-state reaction method 2 In 2 SiSe 6 Compound; The Li 2 Se is 1.857 g, the In 2 Se 3 is 9.330 grams, the Si is 0.562 grams, and the Se is 3.158 grams, namely Li 2 Se:In 2 Se 3 :Si:Se=0.02mol:0.02mol:0.02mol:0.04mol;

[0047] The specific operation steps are as follows: weigh the reagents in the glove box according to the above dosage, put them into the mortar, mix and carefully grind them, then put them into a Φ12mm×16mm quartz tube, and evacuate them to 10 -3 After pa, the quartz tube was melted and packaged with a flame, put into a muffle furnace, and slowly raised to 850°C, the heating rate was 30°C / hour, and the temperature was kept constant for 72 hours. After cooling, take it out, take out the sample and grind it again, and place Vacuum-pack it in a quartz tube, sinter it in a muffle furn...

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Abstract

The invention relates to a Li2In2SiSe6 compound and a Li2In2SiSe6 nonlinear optical crystal as well as preparation methods and applications thereof. The Li2In2SiSe6 compound is prepared by performing a solid-phase reaction; the Li2In2SiSe6 nonlinear optical crystal is prepared in a high-temperature melt growth manner by using a spontaneous crystallization method or a bridgman-stockbarger method; during the growth of the Li2In2SiSe6 nonlinear optical crystal, the crystal is easy to grow up, transparent and not wrapped, so that the method has the advantages of rapid growth speed, low cost, easy obtainment of the large-size crystal and the like. The obtained Li2In2SiSe6 nonlinear optical crystal has the advantages of being wide in light-pervious waveband, large in hardness, good in mechanical property, difficult to break and deliquesce, easy to machine and store and the like. Thus, the Li2In2SiSe6 nonlinear optical crystal can be used for manufacturing a nonlinear optical component.

Description

technical field [0001] The present invention relates to a kind of Li 2 In 2 SiSe 6 Compound, Li 2 In 2 SiSe 6 nonlinear optical crystals (Li 2 In 2 SiSe 6 single crystal) and the Li 2 In 2 SiSe 6 Preparation method of single crystal and use of Li 2 In 2 SiSe 6 Applications of nonlinear optical devices made of single crystals. Background technique [0002] Crystals with nonlinear optical effects are called nonlinear optical crystals. Here nonlinear optical effects refer to effects such as frequency doubling, sum frequency, difference frequency, and parametric amplification. Nonlinear optical effects are only possible in crystals that do not have a center of symmetry. Using the nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, up and down frequency converters, and optical parametric oscillators can be made. The laser generated by the laser can be frequency converted by nonlinear optical devices, so as to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B11/00C04B35/547G02F1/355
Inventor 姚吉勇尹文龙冯凯郝文钰傅佩珍吴以成
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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