Zr:Fe:LiNbO3 crystal and its preparing method

A fe2o3, crystal technology, applied in the field of crystal and its preparation, can solve the problems of poor photorefractive performance, slow response speed, low resistance to light damage, etc., and achieve strong resistance to light damage, short writing time, and small amplitude. Effect

Inactive Publication Date: 2007-08-29
YIBIN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is in order to solve current Fe:LiNbO 3 The problems of slow crystal reaction speed, poor photore

Method used

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  • Zr:Fe:LiNbO3 crystal and its preparing method

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Experimental program
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specific Embodiment approach 1

[0007] Specific implementation mode one: Zr:Fe:LiNbO in this implementation mode 3 The crystals are made of ZrO with a purity of 99.99% 2 , Fe 2 o 3 、LiCO 3 and Nb 2 o 5 made; where ZrO 2 The doping amount is 2~6mol%, Fe 2 o 3 The doping concentration is 0.01-0.04wt%, and the molar ratio of Li to Nb is 0.946.

specific Embodiment approach 2

[0008] Specific implementation mode two: ZrO in this implementation mode 2 The doping amount is 3-6 mol%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Specific embodiment three: in this embodiment, Fe 2 o 3 The doping concentration is 0.01-0.025wt%. Others are the same as in the first embodiment.

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Abstract

The invention relates to a Zr:Fe:LiNbO3 crystal and the preparing method thereof, relating to a crystal and the preparing method thereof. And the crystal is made of ZrO2, Fe2O3, LiCO3 and Nb2O5 with the same purity of 99.99%, where the ZrO2 doping quantity is 2-6mol%, the Fe2O3 doping concentration is 0.01-0.04wt%, and the molar ratio of Li to Nb is 0.946. and the preparing method comprises the steps of: 1. weighing ZrO2, Fe2O3, LiCO3 and Nb2O5 and fully mixing them; 2. placing the ready-mixed raw materials into a Pt pot, and making crystal growth by Czochralski method; 3. polarizing the obtained crystals in the step 2; then accurately orienting the polarized crystals and cutting by Y surface and making optical quality polishing on the crystal surfaces and obtaining Zr:Fe:LiNbO3 crystals. And the Zr:Fe:LiNbO3 crystal can act as huge-capacity holographic memory. And the invention has advantages of small reduced amplitude of diffraction efficiency, short read-in time, high flexibility and strong optical loss resistance.

Description

technical field [0001] The invention relates to a crystal and a preparation method thereof. technical background [0002] Lithium niobate crystals have attracted widespread attention due to their excellent ferroelectric, piezoelectric, photoelectric, nonlinear and photorefractive properties. Devices that are being developed or have been applied on lithium niobate crystals, including surface acoustic wave delay Line devices, optical parametric devices, optical oscillators, photoelectric modulators, frequency converters, 1.53μm wavelength solid-state lasers, 500nm green up-conversion solid-state lasers, etc., especially the photorefractive change of lithium niobate crystal itself The performance makes it a potential mass holographic information storage device. In the past few decades, it has attracted great attention from many scientific research institutes, governments, enterprises and institutions all over the world. Many countries include China, the United States, Russia, ...

Claims

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Application Information

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IPC IPC(8): C30B29/30C30B15/00
Inventor 孙亮国凤云吕强于海涛李洪涛蔡伟徐玉恒赵连城
Owner YIBIN UNIV
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