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Hafnium-dysprosium codoped lithium niobate crystal and preparation method thereof

A lithium niobate, double-doped technology, applied in the field of materials, can solve the problem of low light damage resistance of lithium niobate crystals, and achieve high light damage resistance, no growth streaks, and fast crystal growth.

Inactive Publication Date: 2014-04-02
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing lithium niobate crystal cannot be used as a laser crystal material and the lithium niobate crystal has low light damage resistance, and provide a hafnium-dysprosium double-doped lithium niobate crystal and a preparation method thereof

Method used

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  • Hafnium-dysprosium codoped lithium niobate crystal and preparation method thereof
  • Hafnium-dysprosium codoped lithium niobate crystal and preparation method thereof
  • Hafnium-dysprosium codoped lithium niobate crystal and preparation method thereof

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specific Embodiment approach 1

[0023] Specific embodiment one: present embodiment hafnium dysprosium double-doped lithium niobate crystal, it is made of Nb 2 o 5 、LiCO 3 , HfO 2 and Dy 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, Dy 2 o 3 The molar amount of doping accounted for 0.5% of the total molar amount of the four raw materials, HfO 2 The molar amount of doping accounts for 2% to 8% of the total molar amount of the four raw materials.

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the Nb 2 o 5 、LiCO 3 , HfO 2 and Dy 2 o 3 The purity is 99.99%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the HfO 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 hafnium-dysprosium codoped lithium niobate crystal and a preparation method thereof. The crystal and the preparation method solve the problems that the existing lithium niobate crystal cannot serve as a laser crystal material and the light injury resistance of the lithium niobate crystal is low. The crystal is made from Nb2O5, LiCO3, HfO2 and Dy2O3. The method comprises the steps of 1, mixing the four raw materials, 2, growing the crystal by a lifting method and obtaining a multi-domain crystal, 3, polarizing and obtaining a polarized crystal, and 4, cutting, polishing and obtaining an Hf:Dy:LiNbO3 crystal. The Hf:Dy:LiNbO3 crystal prepared by the method is high in glossiness, uniform in component, flawless, growth-striation-free, crack-free, and higher in light injury resistance, and can serve as the laser crystal material; the preparation method is simple, convenient to operate and high in crystal growth rate; and the crystal material has a broad application prospect in preparing compact laser diode pumps and all-solid tunable laser devices.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a hafnium-dysprosium double-doped lithium niobate crystal and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of optical fiber technology and integrated optical technology, lithium niobate crystals (LiNbO 3 ) has become one of the crystals with the most in-depth research value in optical waveguide materials due to its unique and excellent properties. In particular, the combination of rare earth light-emitting doping, periodic polarization and optical waveguide can develop more solid-state lasers and frequency conversion devices with excellent performance. Therefore, at present, lithium niobate crystals doped with rare earth ions have attracted more and more attention from researchers. However, the resistance to photodamage of lithium niobate crystals is lower than that of other crystals, which severely limits...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/30C30B15/00C30B33/04
Inventor 代丽焦珊珊赵丽丽李大勇林家齐代明徐超
Owner HARBIN UNIV OF SCI & TECH