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Li2In2GeS6 compound and Li2In2GeS6 nonlinear optical crystal as well as preparation methods and applications thereof

A technology of nonlinear optics and compounds, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve problems such as slow development of nonlinear crystals, low optical damage threshold, and difficult crystal growth

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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  • Li2In2GeS6 compound and Li2In2GeS6 nonlinear optical crystal as well as preparation methods and applications thereof
  • Li2In2GeS6 compound and Li2In2GeS6 nonlinear optical crystal as well as preparation methods and applications thereof

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Experimental program
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Effect test

Embodiment 1

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

[0040] Using (1) Li 2 S+In 2 S 3 + GeS 2 = Li 2 In 2 GeS 6 The reaction formula is to prepare Li by solid-state reaction method 2 In 2 GeS 6 Compound; The Li 2 S is 1.379 g, the In 2 S 3 9.775 g, the GeS 2 It is 4.102 grams; that is, Li 2 S:In 2 S 3 : GeS 2 =0.03mol:0.03mol:0.03mol;

[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 800 ° C for 48 hours, take it out, put it in a mortar, smash and grind it to get powdery Li 2 In 2 GeS 6 compound.

Embodiment 2

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

[0043] Using Li 2 S+2In+Ge+5S=Li 2 In 2 GeS 6 The reaction formula is to prepare Li by solid-state reaction method 2 In 2 GeS 6 Compound; The Li 2 S is 1.379 grams, the In is 6.889 grams, the Ge is 2.178 grams, and the S is 4.811 grams, namely Li 2 S:In:Ge:S=0.03mol:0.06mol:0.03mol:0.15mol;

[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, melt and package the quartz tube with a flame, put it into a muffle furnace, and slowly raise it to 900°C with a heating rate of 10°C / hour, keep the temperature constant for 48 hours, take it out after cooling, take out the sample and grind it again, and then place 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 ...

Embodiment 3

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

[0046] Using Li 2 S+In 2 S 3 +Ge+2S=Li 2 In 2 GeS 6 The reaction formula is to prepare Li by solid-state reaction method 2 In 2 GeS 6 Compound; The Li 2 S is 1.379 g, the In 2 S 3 is 9.775 grams, the Ge is 2.178 grams, and the S is 1.924 grams, namely Li 2 S:In 2 S 3 : Ge: S=0.03mol: 0.03mol: 0.03mol: 0.06mol;

[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, melt and package the quartz tube with a flame, put it into a muffle furnace, and slowly raise it to 800°C, the heating rate is 20°C / hour, keep the temperature for 72 hours, take it out after cooling, take out the sample and grind it again, and then place Vacuum-encapsulated in a quartz tube, sintered in a muffle furnace at 800°C for 48...

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Abstract

The invention relates to a Li2In2GeS6 compound and a Li2In2GeS6 nonlinear optical crystal as well as preparation methods and applications thereof. The Li2In2GeS6 compound is prepared by performing a solid-phase reaction; the Li2In2GeS6 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 Li2In2GeS6 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 Li2In2GeS6 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 Li2In2GeS6 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 GeS 6 Compound, Li 2 In 2 GeS 6 nonlinear optical crystals (Li 2 In 2 GeS 6 single crystal) and the Li 2 In 2 GeS 6 Preparation method of single crystal and use of Li 2 In 2 GeS 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 more...

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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