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Method for growing emerald crystal by adopting Czochralski method

An alexandrite and pulling method technology, which is applied in the field of growing alexandrite crystals by the pulling method, can solve the problems of zero utilization rate, imperfect alexandrite crystal growth process, flat crystal shape, etc., and achieve good repeatability

Inactive Publication Date: 2021-09-17
青岛海泰光电技术有限公司
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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems, the present invention provides a method for growing alexandrite crystals by using the pulling method. This method solves the problem that the quality of the grown alexandrite crystals has not been achieved despite many years of research by scientific research institutes. Poor, the crystal shape is flat, the utilization rate is almost zero, and the alexandrite crystal growth process is not perfect.

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  • Method for growing emerald crystal by adopting Czochralski method
  • Method for growing emerald crystal by adopting Czochralski method
  • Method for growing emerald crystal by adopting Czochralski method

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Embodiment Construction

[0031] Hereinafter, the present invention will be specifically described through exemplary embodiments. In order to more clearly introduce the method for growing alexandrite crystals provided by the embodiments of the present invention in detail, the following will be described in conjunction with specific examples.

[0032] This embodiment provides a method for growing alexandrite crystals by the pulling method, and carries out the directional growth of the pulling method seed crystal, including the following steps:

[0033] Inoculation: Rotate the seed crystal before inoculation, use the ccd camera to observe the inoculation situation in real time, when inoculation, observe the weight curve changes shown in the software, the curve is horizontal and straight, and start pulling;

[0034] Shouldering: During the shouldering process, the crystal diameter d gradually grows from 5-10mm to 50-70% of the crucible diameter, and the crystal diameter d changes linearly with the shoulder...

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Abstract

The invention relates to the technical field of laser crystal manufacturing, in particular to a method for growing an emerald crystal by adopting a Czochralski method. The method adopts a Czochralski method for seed crystal directional growth, and comprises the following steps: inoculating, shouldering, equal-diameter growth, ending and cooling to finally obtain the emerald crystal, and the utilization rate of the obtained emerald crystal reaches 80%. According to the invention, rotation and pulling are stopped and cooling is started after ending, and the growth rate of the crystal is controlled by adjusting the power through the PID, so that the crystallization rate of the crystal is controlled. The method has the advantages of controllable growth speed, large growth size and good repeatability, and is suitable for industrial production of the emerald crystal.

Description

technical field [0001] The invention relates to the technical field of laser crystal manufacturing, in particular to a method for growing alexandrite crystals by a pulling method. Background technique [0002] Lasers made of alexandrite crystals have a wide range of applications, involving scientific research, military, medical, atmospheric measurement, optoelectronic technology and other fields. [0003] It is difficult to grow alexandrite crystals, and it is difficult to obtain high-quality and large-sized crystals. Despite years of research by scientific research institutes, no major breakthrough has been made. The quality of the grown alexandrite crystals is poor, the crystal shape is flat, the utilization rate is almost zero, and the alexandrite crystal growth process is not perfect. Contents of the invention [0004] Aiming at the above-mentioned technical problems, the present invention provides a method for growing alexandrite crystals by using the pulling method....

Claims

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Application Information

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IPC IPC(8): C30B15/26C30B15/20C30B29/34
CPCC30B15/26C30B15/206C30B29/34
Inventor 王世武许辉李瑞茂聂奕
Owner 青岛海泰光电技术有限公司
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