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Laser pretreatment apparatus and method for side-by-side placement of transparent optical elements

A technology of laser pretreatment and optical components, applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of time-consuming, unsuitable laser pretreatment, etc., and achieve the compression pretreatment time period and the high-efficiency laser damage threshold. , The effect of raising the laser damage threshold

Active Publication Date: 2017-09-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The point-by-point scanning method has the disadvantage of taking a long time
Using laser beam reflections for scanning can improve efficiency, but this method is not suitable for laser pretreatment of thinner transparent bulk elements

Method used

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  • Laser pretreatment apparatus and method for side-by-side placement of transparent optical elements

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0022] refer to figure 1 , a laser preprocessing device with transparent optical elements placed side by side, including a pulse laser 1 along the laser beam transmission direction, an energy attenuation system 2, an optical switch 3, a lens system 4, a beam splitting wedge 5, and a laser energy detector 6, CCD An imaging system 7 , a motorized mobile station 8 and a main control computer 9 .

[0023] The pulsed laser 1 is a Nd:YAG pulsed laser, and the focal length of the lens system 4 is 8m.

[0024] The main control computer 9 controls the pulse output of the pulse laser 1 and the opening and closing of the optical switch 3 through the data output card; the main control computer 9 controls the movement of the electric mobile platform 8 through the motion control card an...

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Abstract

The invention discloses a laser pretreatment device and method with transparent optical elements arranged side by side. The device comprises a pulse laser, an energy attenuation system, an optical switch, a lens system and a light splitting wedge plate which are arranged in the laser transmission direction, and further comprises a laser energy detector, a CCD imaging system, an electric moving table, a main control computer and the optical elements. The optical elements are arranged on element clamps side by side in the light beam transmission direction, and the element clamps are adjustable in positions and arranged on the electric moving table. The main control computer controls triggering of the pulse laser, on and off of the optical switch and moving of the electric moving table. According to the laser pretreatment device and method with the transparent optical elements arranged side by side, the plurality of optical elements are arranged side by side, the different optical elements are subjected to irradiation treatment with laser lights which are different in energy density at the same time, the energy density is improved by moving the positions of the optical elements arranged side by side for repeated pretreatment, and a fast and efficient serial pretreatment method is achieved.

Description

technical field [0001] The invention relates to the field of laser pretreatment of optical elements, in particular to a laser pretreatment method and device system for placing transparent optical elements side by side. Background technique [0002] In high-power laser systems, multiple beams are usually combined to obtain high energy. Therefore, a large number of optical components are required. For example, NIF in the United States requires 192 DKDP mixing components. The laser damage of optical components is often the key factor restricting the operation level of related systems. Practice has proved that laser pretreatment technology is a very effective method to improve the ability of optical components to resist laser damage. This technology uses a suitable laser pretreatment process to irradiate the optics with 100% coverage. At present, the laser spot with small aperture and (sub)millimeter size is mainly used to uniformly irradiate the components by means of raster...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00B23K26/70
CPCB23K26/00B23K26/70
Inventor 邵建达王岳亮赵元安胡国行
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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