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Preparation method of microporous liquid cooled non-deformation mirror

A technology of liquid cooling and manufacturing method, which is applied to the structure/shape of mirrors and optical resonators, which can solve the problems of liquids not being able to flow smoothly, and achieve the effect of small micropore size, uniform micropore distribution, and simple manufacturing process

Inactive Publication Date: 2011-06-29
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the welding of foamed copper and mirror surface is a difficult problem to solve
During brazing, the molten solder enters the micropores of the foamed copper under the action of capillary force, blocking the micropores of the foamed copper, so that the liquid cannot flow smoothly

Method used

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  • Preparation method of microporous liquid cooled non-deformation mirror
  • Preparation method of microporous liquid cooled non-deformation mirror
  • Preparation method of microporous liquid cooled non-deformation mirror

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation examples.

[0025] Under laser irradiation, the mirror surface expands due to heat absorption, resulting in temperature rise, and due to the existence of a temperature gradient, the deformation is hindered, resulting in mirror deformation. If water cooling is used to conduct heat away in the non-irradiated area of ​​the laser, the temperature gradient of the entire mirror body can be reduced or even eliminated, thereby suppressing the distortion of the mirror surface. The heat transfer effect of the fluid is related to the flow rate, groove structure, heat transfer area and flow state. If the heat transfer area is increased and the flow state is changed, the heat transfer effect can be greatly improved, so that a small flow rate can also obtain good heat transfer. . The specific surface area of ​​connected micropores is large, and th...

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Abstract

The invention discloses a microporous liquid cooled non-deformation mirror and a preparation method thereof. Metal-based mixed powder is directly sintered on the back part of a mirror surface by adopting laser and a liquid flowing microporous layer is formed integrally, so that cooling liquid can flow in micropores of the liquid flowing microporous layer. Therefore, the mirror surface is cooled, and the temperature rise and deformation of the mirror surface can be reduced. Due to the adoption of the microporous liquid cooled non-deformation mirror and the preparation method thereof, the difficulty that a microporous liquid mirror cannot be welded integrally is overcome and the problem of insufficient heat exchange effect caused by cooling a non-deformation mirror by using a variety of liquid at present is solved at the same time. The microporous liquid cooled non-deformation mirror is prepared directly on the mirror surface by adopting a rapid forming method without subsequent welding; the method is simple; and the structure is controllable.

Description

technical field [0001] The invention belongs to the field of laser optical resonant cavities, and in particular relates to a liquid-cooled non-deformable mirror and a manufacturing method thereof, which are mainly used for high-energy laser optical resonant cavities and optical chains with high requirements on high power density and surface shape. Background technique [0002] Due to the uneven absorption of laser energy in the laser optical resonator, the temperature of the mirror surface is uneven (such as figure 1 As shown), the surface shape of the mirror is deformed, causing the laser wavefront to be distorted, resulting in a decrease in the quality and stability of the output beam. As the laser power becomes higher and higher, this problem becomes more and more prominent. Therefore, reducing the uneven thermal deformation of the mirror is a key technology in high-power laser technology. At present, there are three main ways to reduce the uneven thermal distortion of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/08H01S3/08
Inventor 朱海红程祖海左都罗谢明杰何崇文胡攀攀
Owner HUAZHONG UNIV OF SCI & TECH