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Plate gain medium with heat dissipation structure and manufacturing method of plate gain medium

A gain medium and heat dissipation structure technology, applied in the field of lasers, can solve the problems affecting the output power and beam quality of solid-state lasers, intensifying the thermal effect of the slat gain medium, and high requirements for cooling liquids, so as to avoid cooling liquid pollution, and the manufacturing process is simple. High heat dissipation effect

Inactive Publication Date: 2017-12-08
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a slab gain medium with a heat dissipation structure and a manufacturing method thereof, which are used to solve the following problems in the prior art: the existing slab gain medium has high requirements on the cooling liquid used for heat dissipation, resulting in high cost, The welding process to realize the combination of the slab gain medium and the heat dissipation structure is complicated, which will easily lead to the aggravation of the thermal effect of the slab gain medium, thus affecting the output power and beam quality of the solid-state laser

Method used

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  • Plate gain medium with heat dissipation structure and manufacturing method of plate gain medium
  • Plate gain medium with heat dissipation structure and manufacturing method of plate gain medium
  • Plate gain medium with heat dissipation structure and manufacturing method of plate gain medium

Examples

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example 1

[0055] In this example, the material of the slab gain medium is Nd:YAG slab laser crystal (equivalent to the slab gain medium in the first embodiment of the present invention), and the size of the Nd:YAG slab laser crystal is set to: thickness 3 mm , width 40 mm, length 140 mm. The fabrication process of the slab gain medium with heat dissipation structure is as follows:

[0056] First, put the slab gain medium into the evaporation equipment, set the vacuum to a predetermined pressure, in this example to 4×10 -3 Pa, set the evaporation power to 800W, the time to 20 minutes, and the optical film thickness to 3 microns.

[0057] Secondly, on the two ends of the slab laser crystal coated with optical film, the surface of the area formed by the thickness range of 0 to 4 mm and the width range of 0 to 40 mm is protected with high temperature tape, and then placed in vacuum magnetron sputtering. Injection equipment, vacuumed to 4×10 -3 Pa (equivalent to the first predetermined at...

example 2

[0061] In this example, the material of the slab gain medium is Nd:YAG slab laser ceramics, and the dimensions are set as follows: a thickness of 3 mm, a width of 30 mm, and a length of 180 mm. The fabrication process of the slab gain medium with heat dissipation structure is as follows:

[0062]First, put the slab gain medium into the evaporation equipment, set the vacuum to a predetermined pressure, in this example to 4×10 -3 Pa, set the evaporation power to 800W, the time to 20 minutes, and the optical film thickness to 3 microns.

[0063] Secondly, the two ends of the slab laser ceramic coated with optical film, the surface of the area formed by the thickness range of 0 to 5 mm and the width range of 0 to 30 mm is protected with high temperature tape, and then put into the vacuum magnetron sputtering equipment , evacuated to 4×10 -3 Pa, set the sputtering power of metal titanium to 1000W, and the time is 1.5 minutes; the sputtering power of metal platinum is 600W, and th...

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Abstract

The invention discloses a plate gain medium with a heat dissipation structure and a manufacturing method of the plate gain medium. The method comprises the steps of plating an optical film on a surface of the plate gain medium according to a preset evaporation method; protecting and covering two ends of the plate gain medium plated with the optical film, and coating a metal film on the optical film of the plate gain medium after being protected and covered by employing a magnetron sputtering coating method; and manufacturing the heat dissipation structure by employing a metal material adding manufacturing method on the surface of the plate gain medium plated with the metal film so as to obtain the plate gain medium with the heat dissipation structure. According to the manufacturing method of the plate gain medium with the heat dissipation structure, the heat dissipation structure can be directly manufactured on the surface of the plate gain medium, the two ends, to which pumping light is injected, of the plate gain medium can be protected, the manufacturing process is relatively simple and is easy to implement, and the problem of the prior art is solved.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a slab gain medium with a heat dissipation structure and a manufacturing method thereof. Background technique [0002] Solid-state lasers are widely used in industrial processing, scientific research and other fields. Slab gain media can be used as one of the ideal gain media for high-power, high-beam quality solid-state lasers due to their structural advantages such as large cooling surfaces. As the output power of the solid-state laser increases, various thermal effects of the slab gain medium of the solid-state laser are exacerbated, such as thermal temperature gradient, thermal stress, and thermally induced birefringence. These thermal effects will directly lead to a decrease in the output power of the solid-state laser, resulting in poor beam quality and even bursting of the slab gain medium. [0003] In order to reduce the influence of thermal effects on the output power of...

Claims

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Application Information

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IPC IPC(8): H01S3/04
CPCH01S3/0405
Inventor 陈露梁兴波刘磊唐晓军王超刘洋王文涛吕坤鹏
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP