A laser shutdown system with high damage resistance

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

Active Publication Date: 2017-06-06
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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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 temperatures, and is even broken down by the laser, which greatly weakens the use of the optical gate. performance, reducing the shutter life

Method used

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  • A laser shutdown system with high damage resistance
  • A laser shutdown system with high damage resistance
  • A laser shutdown system with high damage resistance

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Embodiment Construction

[0012] In order to make the object, technical solution 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] Attached here figure 2 Describe the system as a whole. Such as figure 2 As shown, the laser shutter system of the present invention has high damage resistance and can withstand high-power laser, including a deflection control system, a total reflection mirror, and an absorber located on the optical path of the total reflection mirror.

[0014] The deflection control system uses rotation to control the total reflection mirror to move into and out of the laser light path. When the processing process needs to be interrupted, the total reflection mirror is rotated into the laser light path, and the total reflection mirror changes the propagation direction of the laser light to deflect it, thereby cutting off the tr...

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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 with high damage resistance and stable operation under high power. Background technique [0002] High power lasers are widely used in the field of industrial material processing. In actual application sites, laser processing is not a continuous process. During this period, there will be a brief interruption of 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 should be ensured that there is no high-power laser in the processing environment during this intermittent process. The safest way is to cut off the power of the laser first, and then turn on the laser to return to the processing state. However, frequent switching on and off not only affects the processing speed, but also causes irreversible damage to the laser and reduces the servi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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