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monoclinic phase ga 2 the s 3 Preparation method of crystal and its application in optics

A technology of monoclinic phase and monoclinic crystal system, which is applied in the field of material science to achieve the effects of good thermal stability, high yield and good repeatability

Active Publication Date: 2017-02-22
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through literature research, there is no information about Ga 2 S 3 Application Report as Infrared Second-Order Nonlinear Optical Material

Method used

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  • monoclinic phase ga <sub>2</sub> the s <sub>3</sub> Preparation method of crystal and its application in optics
  • monoclinic phase ga <sub>2</sub> the s <sub>3</sub> Preparation method of crystal and its application in optics
  • monoclinic phase ga <sub>2</sub> the s <sub>3</sub> Preparation method of crystal and its application in optics

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: 1mmol monoclinic Ga 2 S 3 Synthesis

[0034] Weigh 1mmol of Ga 2 o 3 (187mg), 2mmol of B powder (22mg), 3mmol of S powder (97mg, excess 1%), ground in an agate mortar for about 10min until fully mixed, and then pressed into tablets, under a vacuum of 2 o 3 , about 1 mmol of monoclinic Ga can be obtained 2 S 3 Polycrystalline powder with a yield of over 90%.

[0035] The crystal structure parameter of the present invention is: a=11.117 (9) b=6.406(5) c=7.033(5) α=90°, β=121.15(9)°, γ=90°, Z=4. The crystal structure analysis shows that the compound has a simple three-dimensional network framework structure and crystallizes in the non-central space group Cc.

Embodiment 2

[0036] Example 2: 30mmol monoclinic Ga 2 S 3 Synthesis

[0037] Weigh 30mmol of Ga 2 o 3 (5623mg), 60mmol of B powder (649mg), 90mmol of S powder (2943mg, excess 2%), ball milled in a ball mill at 400r / min for 2h until fully mixed, and then pressed into tablets, under a vacuum of 2 o 3 , about 30 mmol of monoclinic Ga can be obtained 2 S 3 Polycrystalline powder with a yield of over 90%.

[0038] This example demonstrates that this method can be used to synthesize monoclinic Ga in large quantities 2 S 3 Polycrystalline powder, for the next step of monoclinic Ga 2 S 3 The growth of large crystals sets the stage.

Embodiment 3

[0039] Example 3: 10mmol monoclinic Ga 2 S 3 Synthesis

[0040] Weigh 10mmol of Ga 2 o 3 (1874mg), 20mmol of B powder (217mg), 30mmol of S powder (981mg, excess 2%), milled in a ball mill at 400r / min for 2h until fully mixed, and then pressed into tablets, under the vacuum of 2 o 3 , about 10 mmol of monoclinic Ga can be obtained 2 S 3 Polycrystalline powder with a yield of over 98%.

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Abstract

This disclosure provides a second harmonic generator and an optical parametric oscillator, the second harmonic generator and the optical parametric oscillator comprise one or more nonlinear optical frequency conversion crystal and a pump laser source, the nonlinear optical frequency conversion crystal is a monoclinic Ga.sub.2S.sub.3 crystal, the space group of the monoclinic Ga.sub.2S.sub.3 crystal is Cc, and the unit cell parameters are a=11.1.ANG., b=6.4.ANG., c=7.0.ANG., .alpha.=90.degree., .beta.=121.degree., .gamma.=90.degree., and Z=4.

Description

technical field [0001] The present invention relates to monoclinic Ga 2 S 3 The application of crystal as a second-order nonlinear optical material in the infrared band and the preparation method thereof belong to the field of material science and the field of optics. Background technique [0002] At present, nonlinear crystal materials are attracting more and more attention due to the application of laser technology, especially the second-order nonlinear crystal materials in the deep ultraviolet and mid-far infrared bands, because there are few types and cannot meet the needs of applications. hotspots. The chalcogenide system is becoming the research direction of the middle and far infrared second-order nonlinear crystals, such as AgGaS 2 (AGS), AgGaSe 2 (AGSe), AgGa (1-x) In x Se 2 , GaSe, LiInS 2 (LIS), LiInSe 2 etc. have received extensive attention. Most of these chalcogenides are ternary or more than ternary compounds, and the second-order nonlinear propertie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/46C30B1/10C01G15/00G02F1/355G02F1/37G02F1/39
CPCG02F1/3551C01G15/00C01P2002/72C01P2002/76C01P2002/77C01P2002/82C01P2002/84G02F1/355G02F1/37G02F1/39
Inventor 张明建郭国聪曾卉一姜小明范玉航刘彬文
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI