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Ytterbium-europium double-doped lithium niobate crystal and preparation method thereof

A double-doping, lithium niobate technology, applied in the field of materials, can solve problems such as low luminous efficiency, and achieve the effects of simple preparation method, fast growth rate and good transparency

Inactive Publication Date: 2019-09-13
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem of low up-conversion luminous efficiency of the existing lithium niobate crystal, and the object of the present invention also provides a method for preparing double-doped ytterbium europium lithium niobate crystal

Method used

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  • Ytterbium-europium double-doped lithium niobate crystal and preparation method thereof
  • Ytterbium-europium double-doped lithium niobate crystal and preparation method thereof
  • Ytterbium-europium double-doped lithium niobate crystal and preparation method thereof

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Experimental program
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Embodiment approach 1

[0021] Collective implementation mode 1: In this implementation mode, ytterbium europium niobium double-doped lithium acid crystal is composed of Nb 2 o 3 , Li 2 CO 3 , Yb 2 o 3 and Eu 2 o 3 Made, where [Li 2 CO 3 ] / [Nb 2 o 3 ]=48.6 / 51.4, where Yb 2 o 3 The molar amount of doping accounted for 0.5mol% of the total molar amount of the four raw materials, Eu 2 o 3 The molar amount of doping accounts for 0.5mol% of the total molar weight of the four raw materials.

specific Embodiment approach 2

[0022] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the Nb 2 o 3 , Li 2 CO 3 , Yb 2 o 3 and Eu 2 o 3 The purity of all is 99.99%, and others are identical with specific embodiment one.

specific Embodiment approach 3

[0023] Specific embodiment three: the method for preparing ytterbium-europium double-doped lithium niobate crystal in this embodiment is carried out according to the following steps:

[0024] (1) Mixing: according to [Li 2 CO 3 ] / [Nb 2 o 3 ]=48.6 / 51.4 ratio, doped sensitizing element Yb 2 o 3 The doping amount accounts for 1mol% of the total molar weight of the four raw materials, and the rare earth element Eu 2 o 3 The incorporation amount accounts for 1mol% of the total molar weight of the four raw materials, and weighs Nb 2 o 3 , Li 2 CO 3 , Yb 2 o 3 and Eu 2 o 3 Four raw materials, fully mixed evenly;

[0025] (2) Burning material: Put the uniformly mixed raw materials into a platinum crucible, raise the temperature, and keep the temperature at 750°C for three hours, so that Li 2 CO 3 CO in 2 Separated, and then heated to 1150 ° C for three hours, so that the Nb 2 o 3 , Li 2 CO 3 react to produce LiNbO 3 Polycrystalline;

[0026] (3) Crystal growth b...

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Abstract

The invention discloses a Yb:Eu:LiNbO3 crystal and a preparation method thereof, and relates to a crystal and a preparation method thereof. The Yb:Eu:LiNbO3 crystal is prepared from Nb2O3, Li2CO3, Yb2O3 and Eu2O3 which all have purity of 99.99%, wherein the doping molar amount of the Yb2O3 accounts for 0.5 mol% of the total molar amount of the four raw materials, the doping molar amount of the Eu2O3 accounts for 0.5 mol% of the total molar amount of the four raw materials, and the ratio of [Li2CO3] to [Nb2O3] is 48.6 / 51.4. The preparation method comprises the following steps: (1) weighing Nb2O3, Li2CO3, Yb2O3 and Eu2O3 and carrying out mixing; (2) carrying out growing by a Czochralski method; (3) carrying out polarizing; and (4) carrying out cutting and carrying out optical quality-grade polishing to obtain a wafer required by an experiment. The Yb:Eu:LiNbO3 crystal is high in glossiness and uniform in component, and is free of cracks or flaws. The preparation method of the Yb:Eu:LiNbO3 crystal is simple, the growth speed is high, and operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to an optical crystal, in particular to a ytterbium-europium double-doped lithium niobate crystal and a preparation method thereof. Background technique [0002] Lithium niobate crystal is an artificial crystal that integrates electro-optic, acoustic, piezoelectric, pyroelectric, nonlinear, photorefractive, and laser activities. It is the crystal with the best comprehensive performance discovered so far. After research, it has been found that doping different elements in lithium niobate crystals can effectively improve its various properties. Therefore, through doping modification, lithium niobate has been widely used in various fields to make various devices Such as high-frequency high-energy converters, lighting, display, medical radiology images, radiation field detection and storage and other fields. [0003] At present, rare earth luminescent materials are widely used in light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/30C30B15/00
CPCC30B15/00C30B29/30
Inventor 代丽王路平邵瑀韩县博
Owner HARBIN UNIV OF SCI & TECH