Laser switching-off system with high damage resistance

A laser, laser technology, applied in laser parts, laser cooling devices, optics, etc., can solve the problems of weakening the performance of the shutter, reducing the service life of the shutter, burning damage, etc., to eliminate instability and improve resistance. Damage ability, damage reduction effect

Active Publication Date: 2015-01-14
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, as the absorber is repeatedly exposed to high-power lasers, the conical convex surface is prone to laser ablation damage at high te

Method used

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  • Laser switching-off system with high damage resistance
  • Laser switching-off system with high damage resistance
  • Laser switching-off system with high damage resistance

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Embodiment Construction

[0012] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0013] Attach here figure 2 An overall description of the system. Such as figure 2 As shown, the laser shutter system with high damage resistance and capable of withstanding high-power lasers of the present invention includes a deflection control system, a total mirror, and an absorber located on the optical path of the total mirror.

[0014] The deflection control system controls the movement of the total mirror in and out of the laser light path by means of rotation. When the processing process needs to be interrupted, the total mirror rotates and moves into the laser light path, and the total mirror changes the propagation direction of the laser to make it deflect, thereby cutting off the transmission of the laser. ...

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Abstract

The invention discloses a laser switching-off system with high damage resistance. The system comprises a deflection control system, a mirror and an absorber located on the optical path of the mirror, wherein the deflection control system controls the mirror to move in or out of a laser optical path in a rotary mode, the absorber is of a hollow cylinder structure, one end of the absorber is closed, the other end of the absorber is a laser inlet end, a protruding cone is arranged at the bottom end of the interior of the closed end, a light beam divergence element is fixed to the laser inlet end to enable inlet laser to be diverged in advance, a cooler is formed by the surface of the light beam divergence element, the inner side wall of the hollow cylinder body and the surface of the cone, and cooling water is injected into the cooler to cool the light beam divergence element, the inner side wall of the hollow cylinder body and the surface of the cone.

Description

Technical field [0001] The invention relates to the technical field of high-power lasers, in particular to a laser shutter system that has high damage resistance and can work stably under high power. Background technique [0002] High-power lasers are widely used in the field of industrial material processing. In the actual application site, laser processing is not a continuous process. During this period, there will be a short interruption in the processing process due to the observation of the quality of the processed workpiece and the replacement of the processed workpiece. For safety reasons, it is necessary to ensure that there is no high-power laser in the processing environment during this intermittent process. The safest method is to cut off the laser power first, and then turn on the laser to restore the processing state. However, frequent switching of the machine not only affects the processing speed, but also causes irreversible damage to the laser and reduces the s...

Claims

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Application Information

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IPC IPC(8): G02B26/08H01S3/04
Inventor 林学春陈寒张志研于海娟张玲邹淑珍
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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