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Lithium-containing crystalline material and preparation method and application thereof

A technology of crystal materials and raw materials, applied in the field of lithium-containing crystal materials and their preparation, can solve the problems of inability to meet the requirements of high-power laser development, low laser damage threshold, large nonlinear coefficient, etc., and achieve excellent infrared nonlinear optical performance. , Infrared nonlinear optical performance improvement, the effect of nonlinear optical performance improvement

Active Publication Date: 2019-09-27
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the NLO materials used in the mid-to-far infrared band mainly include AgGaS 2 , AgGaSe 2 and ZnGeP 2 , these materials have large nonlinear coefficients and high transmittance in the mid- and far-infrared bands, but the laser damage threshold is low, which cannot meet the requirements of high-power laser development

Method used

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  • Lithium-containing crystalline material and preparation method and application thereof
  • Lithium-containing crystalline material and preparation method and application thereof
  • Lithium-containing crystalline material and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0077] After Ba (64mg), Ga (131mg), S (105mg), LiCl (110mg) and KCl (193mg) were mixed evenly, they were placed in a quartz tube and evacuated to 10 -4 Seal the tube in Pa, put it into a muffle furnace and heat it to 950°C, keep it warm for 72 hours, cool down to 400°C at 5°C / h, turn off the muffle furnace and cool it down to room temperature naturally to obtain a crystal product, which is designated as sample 1.

Embodiment 2

[0079] After Ba (64mg), Ga (131mg), S (105mg), LiCl (120mg) and RbBr (180mg) were mixed evenly, they were placed in a quartz tube and evacuated to 10 -4 Seal the tube with Pa, put it into a muffle furnace and heat it to 950°C, and after 72 hours of heat preservation, turn off the muffle furnace and cool it down to room temperature naturally to obtain a crystal product, which is designated as sample 2.

Embodiment 3

[0081] After Ba (64mg), Ga (131mg), S (105mg), LiCl (130mg) and CsCl (192mg) were mixed evenly, they were put into a quartz tube and evacuated to 10 -4 Seal the tube with Pa, put it into a muffle furnace and heat it to 950°C, and after 72 hours of heat preservation, turn off the muffle furnace and cool it down to room temperature naturally to obtain a crystal product, which is designated as sample 3.

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Abstract

The invention discloses a lithium-containing crystalline material, and a preparation method and application thereof, and belongs to the technical field of second-order nonlinear optical materials and preparation. The lithium-containing crystal material has a chemical formula AxBayLiz(Ga4S7)n, wherein A is selected from at least one of K, Rb and Cs, x+2y+z=2n, and n is an integer among 2-7. The method comprises: reacting a raw material containing a barium element, a galium element, a sulfur element, a lithium element and AX under a vacuum condition at a reaction temperature, and cooling, wherein X in AX is selected from one of F, Cl, Br and I. The lithium-containing crystalline material disclosed by the invention has improved infrared nonlinear optical properties and can be applied to lasers. The method disclosed by the invention has the advantage of simple process steps, the obtained crystalline material is high in purity, good in crystallinity and high in yield, and is suitable for large-scale industrial production.

Description

technical field [0001] The application relates to a lithium-containing crystal material and its preparation method and application, belonging to the technical field of second-order nonlinear optical materials and preparation. Background technique [0002] The frequency doubling conversion effect of second-order nonlinear optical materials, such as frequency doubling, difference frequency, sum frequency, optical parametric oscillation, etc., has important applications in the field of optoelectronic devices. In recent years, with the CO 2 With the rapid development of laser radar detection, laser communication, infrared telemetry, infrared navigation and other technologies, the requirements for high-quality and high-performance infrared nonlinear optical materials are becoming more and more urgent. An ideal nonlinear material should have the following properties: 1) large nonlinear effect; 2) wide transmission range; 3) high laser damage threshold; 4) meet phase matching; 5) ...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B1/10G02F1/355
CPCC30B1/10C30B29/46G02F1/3551
Inventor 刘彬文郭国聪姜小明徐忠宁曾卉一
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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