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A laser preprocessing system for optical components

A technology of laser pretreatment and optical components, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of increased laser operating cost, time-consuming and labor-intensive, etc., to improve the efficiency of laser pretreatment and reduce costs. Effect

Active Publication Date: 2018-04-06
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So many irradiation shots are not only time-consuming and labor-intensive, but also the consumption of lasers will increase the operating cost

Method used

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  • A laser preprocessing system for optical components
  • A laser preprocessing system for optical components
  • A laser preprocessing system for optical components

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Experimental program
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specific Embodiment approach

[0040] Such as figure 1 As shown, after the laser beam emitted by the laser light source 101 enters the reflective cavity, it first enters the processing point 1 on the front surface 1041 of the sample to be processed, and exits from the processing point 1' on the back surface 1042 of the sample to be processed. The emitted laser beam is reflected by the first reflecting device 102 and then enters the processing point 2' on the back surface 1042 of the sample to be processed, and exits from the processing point 2 on the front surface 1041 of the sample to be processed. The emitted laser beam is reflected by the second reflecting device 103 and then enters the processing point 3 on the front surface 1041 of the sample to be processed, and exits from the processing point 3' on the back surface 1042 of the sample to be processed. By analogy, the incoming laser beam is reflected multiple times by the reflective cavity to irradiate multiple processing points of the sample to be pro...

Embodiment approach

[0044] The sample to be processed is an optical element coated with an anti-reflection film, and the transmittance of the optical element coated with the anti-reflection film can be greater than 99%. At this time, preferably, the preset processing points of the first row (x direction) of the sample 104 to be processed can be irradiated sequentially according to the preset flux and the number of irradiations, and correspondingly, each column (y direction) is sequentially irradiated. Irradiation was carried out at the preset processing point in . Then, the highest energy value in the preset flux is used to irradiate the remaining preset processing points at preset intervals, and each preset processing point is irradiated 5 times to complete the laser pretreatment of the sample 104 to be processed. Wherein, the preset interval can be set according to the actual transmittance of the optical element coated with the anti-reflection film and the energy step of the preset flux, and ca...

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Abstract

The embodiment of the invention provides an optical element laser pretreatment system, and belongs to the field of optical material laser pretreatment. The optical element laser pretreatment system comprises a laser light source, a first reflecting device and a second reflecting device, wherein the reflecting surface of the first reflecting device is parallel to the reflecting surface of the second reflecting device; a sample to be treated is arranged between the reflecting surface of the first reflecting device and the reflecting surface of the second reflecting device; the first reflecting and the second reflecting device form a reflecting cavity; after entering the reflecting cavity, a laser beam emitted from the laser light source is reflected for multiple times by the reflecting cavity and radiates a plurality of preset treatment points of the sample to be treated, so as to pretreat the sample to be treated. By adopting the optical element laser pretreatment system provided by the embodiment of the invention, the laser pretreatment efficiency of an optical element is effectively improved, and the cost for optical element laser pretreatment is lowered.

Description

technical field [0001] The invention relates to the field of laser pretreatment of optical materials, in particular to a laser pretreatment system for optical elements. Background technique [0002] In order to improve the laser damage performance of optical components, usually before the components are placed on the shelf, laser pretreatment is performed on the light-passing area of ​​the component with laser energy below the damage threshold, that is, the optical component is irradiated with a laser beam. Through laser pretreatment, the component damage threshold can be increased by a maximum of 1 to 2 times. Such a substantial improvement in damage performance is of great significance for the application of optical components. At present, laser pretreatment has become the first choice for high-power laser system optical components before they are put on the shelves. Necessary steps. [0003] During the pretreatment process, the irradiation flux of the laser pulse needs t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00
CPCB23K26/0006
Inventor 王凤蕊刘红婕耿锋蒋晓东黄进李青芝叶鑫孙来喜周晓燕
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS