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Zirconium thulium double-doped lithium niobate crystal and preparation method thereof

A double-doped, lithium niobate technology, applied in the field of materials, can solve the problem of low resistance to light damage of lithium niobate crystals, and achieve the effects of high resistance to light damage, fast crystal growth, and easy operation.

Inactive Publication Date: 2016-08-17
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing lithium niobate crystals cannot be used as laser crystal materials and the lithium niobate crystals have low light damage resistance, and provide zirconium-thulium double-doped lithium niobate crystals and a preparation method thereof

Method used

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  • Zirconium thulium double-doped lithium niobate crystal and preparation method thereof
  • Zirconium thulium double-doped lithium niobate crystal and preparation method thereof
  • Zirconium thulium double-doped lithium niobate crystal and preparation method thereof

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specific Embodiment approach 1

[0022] Specific embodiment one: present embodiment zirconium thulium double-doped lithium niobate crystal, it is made of Nb 2 o 5 、LiCO 3 , ZrO 2 and Tm 2 o 3 made; wherein the LiCO 3 Li and Nb in 2 o 5 The molar ratio of Nb in is 0.946:1, Tm 2 o 3 The molar amount of doping accounted for 0.5% of the total molar amount of the four raw materials, ZrO 2 The molar amount of doping accounts for 2% to 6% of the total molar weight of the four raw materials.

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the Nb 2 o 5 、LiCO 3 , ZrO 2 and Tm 2 o 3 The purity is 99.99%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the ZrO 2 The molar amount of doping accounts for 2% of the total molar amount of the four raw materials. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a Zr-Tm double-doped LiNbO3 crystal and a preparation method thereof, and aims to solve the problems that the existing LiNbO3 crystal cannot serve as a laser crystal material and the optical damage resistance of the LiNbO3 crystal is low. A Zr-Tm double-doped lithium niobate crystal product is prepared by Nb2O5, LiCO3, ZrO2 and Tm2O3. The method comprises steps as follows: 1, the four raw materials are mixed; 2, the Czochralski method is adopted for growing the crystal, and a multi-domain crystal is obtained; 3, polarization is performed, and a polarized crystal is obtained; and 4, cutting and polishing are performed to obtain a Zr:Tm:LiNbO3 crystal. The prepared Zr:Tm:LiNbO3 crystal has high gloss and uniform constituents, is absent from flaws, growth striation and cracking, has higher optical damage resistance and can be taken as a laser crystal material; the preparation method is simple and convenient to operate, and the crystal growing speed is high; and the application prospect in preparing a compact laser diode pumped solid-state tunable laser is broad.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a zirconium-thulium double-doped lithium niobate crystal and a preparation method thereof. Background technique [0002] Lithium niobate crystal (LiNbO 3 ) is a crystal material that integrates piezoelectric, electro-optic, nonlinear, photorefractive, acousto-optic, ferroelectric and laser active effects. It is used in photoelectric modulators, optical oscillators, optical holographic storage, infrared detectors and It is widely used in many aspects such as the yoke, and it is recognized by researchers so far as the most optical performance and the best comprehensive index of synthetic crystals. However, lithium niobate crystals are less resistant to photodamage than other crystals, which severely limits their application in practical growth. [0003] Due to its special performance, lithium niobate crystals are widely used in many aspects, such as as filters. At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/30C30B15/00
Inventor 代丽谭超段小娟李大勇代平
Owner HARBIN UNIV OF SCI & TECH
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