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Method for increasing stray light damage resistance threshold of inner wall of high-power laser system transmission pipeline

A laser system and transmission pipeline technology, applied in the field of laser optics, can solve the problems that plague the design of high-power laser systems, the laser damage threshold is difficult to exceed 0.5, etc., and achieve the effect of increasing the anti-stray light damage threshold and reducing the laser energy density.

Inactive Publication Date: 2019-05-28
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0004] High-power laser system transmission pipe material is generally made of aluminum alloy, even through special surface treatment process, the anti-1053nm wavelength laser damage threshold of the aluminum alloy material surface is difficult to exceed 0.5J / cm 2 , the laser damage threshold of 351nm wavelength is difficult to exceed 0.1J / cm 2 , so how to improve the surface resistance to laser damage threshold is one of the problems that have plagued the design and development of high-power laser systems for a long time

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  • Method for increasing stray light damage resistance threshold of inner wall of high-power laser system transmission pipeline
  • Method for increasing stray light damage resistance threshold of inner wall of high-power laser system transmission pipeline
  • Method for increasing stray light damage resistance threshold of inner wall of high-power laser system transmission pipeline

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the drawings.

[0017] The inventor of the present application, based on the "divergent" type of stray light incident on the inner wall of the pipeline, has a large incident angle, and based on the principle of Fesnier reflection, coating a transmission pipeline made of aluminum alloy with a higher laser damage threshold Transparent silicone fluorine rubber material, structure such as image 3 As shown, the inner wall of the pipeline 1 is coated with a silicone fluorine rubber material coating 2;

[0018] The silicone fluorine rubber material of the present invention is prepared by the team of Professor Chen Xuhuang of Hubei University of Technology using ring-shaped hydrogen-containing fluorosilicone oil and vinyl ring under the action of Pt catalyst, using "liquid surface suspension method" and "step heating method". Published master's thesis: Lv Zhiyong, "Study on the Preparation and Reinforcement o...

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Abstract

The invention discloses a method for increasing a stray light damage resistance threshold of the inner wall of a high-power laser system transmission pipeline, and belongs to the technical field of laser optics. The method comprises the steps that a coating is arranged at the inner wall of the high-power laser system transmission pipeline, and the coating is transparent silicon-fluorine rubber with the laser damage resistance threshold 4-10 times higher than the surface of metal. According to the method, the energy density of laser emitted into the surface of the metal is lowered by 4-10 times, and therefore the inner wall of the high-power laser system transmission pipeline is increased.

Description

Technical field [0001] The invention relates to the technical field of laser optics, in particular to a method for increasing the anti-stray light damage threshold of the inner wall of a transmission pipe of a high-power laser system. Background technique [0002] In a more complex high-power laser optical system, the optical components used for transmission are generally coated with anti-reflection coatings, but there is still a residual reflectivity of about 0.2% on one side. The multiple reflections of the main laser on the surface of the optical components will produce a lot of Stray light (such as figure 1 Shown). The stray light has different hazards to the high-power laser optical system according to its energy density, and different stray light control measures need to be designed to control it. [0003] The stray light in high-power laser systems can generally be divided into two types: "convergent" and "divergent". The focal point of “convergent” stray light is called “...

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Application Information

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IPC IPC(8): G02B1/14
Inventor 王方郑天然刘红婕王德恩邓学伟周丽丹向勇胡东霞袁强袁晓东
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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