Novel magneto-optic single crystal material growing method

A single crystal material and growth method technology, applied in crystal growth, liquid phase epitaxy layer growth, chemical instruments and methods, etc., can solve the problems of insufficient thickness and long growth cycle of magneto-optic thin films, etc., to facilitate processing and realize Effects of device integration and shortened growth cycle

Inactive Publication Date: 2015-07-15
SOUTHWEST INST OF APPLIED MAGNETICS
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Problems solved by technology

[0004] In order to solve the problems in the prior art, the present invention provides a new method for growing magneto-optical single crystal materials, which solves

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  • Novel magneto-optic single crystal material growing method

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[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] A Novel Magneto-optical Single Crystal Material (ReBi) 3 Fe 5 o 12 Growth technology, including the following steps: (A) PbO with a purity of more than 99.99%, B 2 o 3 、 Bi 2 o 3 , Fe 2 o 3 、Re 2 o 3 The powder is mixed evenly according to the determined ratio, put into the platinum crucible treated with nitric acid, and put into the liquid phase epitaxy furnace; Melt and the composition is uniform; (C) Clean the GGG substrate with ultrasonic waves in deionized water, bake the substrate under an infrared lamp with bamboo tweezers, put it on a cleaned platinum jig, and put the jig into an epitaxy furnace After preheating in the preheating zone, put it into the solution for liquid phase epitaxy; during the epitaxy process, control the cooling rate and substrate rotation speed according to the required film thickness; (D) After the epitaxy is completed, lift t...

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Abstract

The invention relates to the fields of growth techniques for novel magneto-optic materials and optical fiber communication, in particular to a growth technique for Bi-doped rare-earth garnet film (ReBi)3Fe5O12 grown through a liquid phase epitaxial method. The method includes the following steps that (A) PbO powder with purity being above 99.99%, B2O3 powder with purity being above 99.99%, Bi2O3 powder with purity being above 99.99%, Fe2O3 powder with purity being above 99.99% and Re2O3 powder with purity being above 99.99% are uniformly mixed in a determined proportion, then put into a platinum crucible and placed in a liquid phase epitaxial furnace; (B) raw materials in the platinum crucible are heated and rotated to be fully melted, and ingredients are even. The method has the advantages that the Bi-doped magneto-optic film is grown through the liquid phase epitaxial method, the growth cycle is greatly shortened, the thickness can reach hundreds of microns, the requirement for specific rotation can be met, machining is facilitated, the size and weight of a magneto-optic device are reduced, and integration of the device is achieved.

Description

technical field [0001] The invention relates to the field of preparation of magneto-optic single crystal materials and optical fiber communication, in particular to liquid phase epitaxial growth of Bi-doped rare earth garnet (ReBi) 3 Fe 5 o 12 growth technology. Background technique [0002] Magneto-optical isolator is a non-reciprocal transmission optical passive device, that is, a passive device with low insertion loss along the forward transmission direction and a large attenuation effect on reverse transmission light. With the development of modern optical fiber communication technology towards high speed and large capacity, the reflected light in the optical path has become an important problem that must be solved. The extra light reflection makes the optical communication system unstable, increases the bit error rate, and limits the long distance optical signal transmission. [0003] So far, the main growth methods of magneto-optical materials used in isolators ar...

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Application Information

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IPC IPC(8): C30B19/00
Inventor 陈运茂姜帆游斌任仕晶
Owner SOUTHWEST INST OF APPLIED MAGNETICS
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