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
CN110284196AActive Publication Date: 2019-09-27FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Publication Date
2019-09-27

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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.
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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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