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A kind of yttrium aluminate composite crystal and preparation method thereof

A composite crystal, yttrium aluminate technology, used in crystal growth, chemical instruments and methods, single crystal growth and other directions, can solve the problems of demanding manufacturing equipment, uneven optical quality, large laser loss, etc., and achieve low cost and large size. Economical adaptability, simple effect of equipment requirements

Active Publication Date: 2018-10-09
北京雷生强式科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the YAP / Nd:YAP / YAP composite crystal provided by the prior art, the optical quality at the bonding interface between YAP and Nd:YAP is not uniform, which will cause a lot of laser loss during application, and this method has a great impact on The manufacturing equipment is demanding, the process is complicated, the cycle is long, the cost is high, and it is only suitable for the manufacture of small-sized composite crystals

Method used

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  • A kind of yttrium aluminate composite crystal and preparation method thereof
  • A kind of yttrium aluminate composite crystal and preparation method thereof
  • A kind of yttrium aluminate composite crystal and preparation method thereof

Examples

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preparation example Construction

[0037] In a second aspect, an embodiment of the present invention provides a method for preparing the above-mentioned yttrium aluminate composite crystal, the method comprising the following steps:

[0038] Step 101, respectively activate the doped yttrium aluminate crystal and the yttrium aluminate crystal, so that the bonding surface of the doped yttrium aluminate crystal has hydrogen bond dangling bonds, and at the same time make the bonding surface of the yttrium aluminate crystal There are hydrogen and oxygen dangling bonds on the bonding surface of the doped yttrium aluminate crystal, or the bonding surface of the doped yttrium aluminate crystal is provided with hydrogen and oxygen dangling bonds, and at the same time, the bonding surface of the yttrium aluminate crystal is provided with hydrogen bonding dangling bonds.

[0039] Step 102 , pre-bonding the bonding surface of the yttrium aluminate crystal and the bonding surface of the doped yttrium aluminate crystal by mea...

Embodiment 1

[0055] The bonding surfaces of the doped yttrium aluminate crystal and the yttrium aluminate crystal are polished so that the respective bonding surfaces meet the bonding quality requirements. Then, soak the doped yttrium aluminate crystal in dilute nitric acid with a mass concentration of 5% for 30 minutes, so that the bonding surface of the doped yttrium aluminate crystal has hydrogen bond dangling bonds, and the yttrium aluminate crystal is placed on the mass concentration Soak in ethanol solution of 5% NaOH for 30 minutes, so that the bonding surface of the yttrium aluminate crystal has hydrogen-oxygen dangling bonds. Then the above-mentioned crystals were taken out, rinsed with deionized water and wiped clean. Aligning the bonded facets of the yttrium aluminate crystal with the bonded facets of the doped yttrium aluminate crystal by the direct bonding technique while using a strain gauge to observe the stress profile of the bonded crystal to achieve high-precision axial m...

Embodiment 2-12

[0058] The operation steps of the following examples are basically the same as those of Example 1. Please refer to Table 1 for the differences, where the mass of active ions doped in the column of doped yttrium aluminate crystal specifications in Table 1 is measured in atomic concentration. In the two columns of doped yttrium aluminate crystal activation treatment and yttrium aluminate crystal activation treatment, the quality of the alkaline washing solution and the pickling washing solution is measured by mass concentration.

[0059] Table 1

[0060]

[0061]

[0062] Under white light or helium-neon laser, the bonding surfaces of the yttrium aluminate composite crystals prepared in the above examples were observed with naked eyes, and there were no bubbles, no cracks, and no scattering. It can be seen that the yttrium aluminate composite crystal provided by the embodiment of the present invention has uniform optical quality at the bonding surface, and there is no inte...

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Abstract

The invention discloses an yttrium aluminate composite crystal and a preparation method thereof and belongs to the field of laser crystals. The yttrium aluminate composite crystal comprises a work medium and undoped impurities bonded at the end parts of the work medium in an optical contact manner, wherein the work medium is a doped yttrium aluminate crystal, and the undoped impurities are pure yttrium aluminate crystals. According to the provided yttrium aluminate composite crystal, the yttrium aluminate crystals are bonded at the end parts of the doped yttrium aluminate crystal in a thermal diffusion bonding manner, the yttrium aluminate composite crystal is obtained, the optical quality on the bonding surface is uniform, an interface between crystals doesn't exist, the laser consumption phenomenon is avoided, and the output efficiency and the output power of a laser are improved.

Description

technical field [0001] The invention relates to the field of laser crystals, in particular to an yttrium aluminate composite crystal and a preparation method thereof. Background technique [0002] Yttrium aluminate (YAlO 3 , referred to as YAP) is a 2μm-band laser matrix crystal material, because the 2μm-band laser is safe for human eyes, has good atmospheric transmission characteristics, strong penetrating ability to battlefield smoke, good confidentiality, can be transmitted by optical fiber, and moderate absorption of water molecules ( Between 1.5 microns and 2.94 microns), in addition to being used as a pump source for medium and long-wave infrared optical parametric oscillators (OPOs), it is also used in lidar, new generation laser ranging, communication, target indication, etc. There are very important application prospects in fields such as weapons and equipment, medical treatment and environmental protection, and are of great significance to national defense constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/24C30B33/06C30B33/02
CPCC30B29/24C30B33/02C30B33/06
Inventor 张月娟李兴旺莫小刚王永国李洪峰王军杰
Owner 北京雷生强式科技有限责任公司
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