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Power-type laser fiber plug-in

A power type, optical fiber technology, applied in the field of power type laser optical fiber plug-in, can solve the problems of side stress damage of optical fiber input window, decrease of effective light transmittance, optical fiber burning, etc., so as to improve the stability of effective pass rate ratio and avoid heat generation. Spontaneous combustion, the effect of avoiding damage

Pending Publication Date: 2018-01-05
SHANGHAI INST OF LASER TECH
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AI Technical Summary

Problems solved by technology

But the existing metal shallow hole structure plug-in (as attached figure 1 As shown), in the case of high-power laser irradiation, the metal end face will be thermally expanded, which will cause stress damage to the side of the fiber input window, resulting in a decrease in effective light transmittance or fiber burning

Method used

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing and embodiment the present invention will be further described

[0012] A power type laser fiber plug-in of the present invention (as attached figure 2 As shown), its characteristics are composed of a deep micro-hole inclined-plane ferrule 1 and a concentric metal bushing 2 in an embedded manner.

[0013] The slope angle of the deep micro-hole slope ferrule 1 is 5-10°, which is a material with a low expansion coefficient.

[0014] Further, the material with low expansion coefficient is zirconia ceramics.

[0015] The concentric metal bushing 2 is a metal jacket with um-level precision.

[0016] The central positioning of the oblique ferrule 1 with deep micro-holes matches the optical fiber with an outer diameter of 125um-1200um.

[0017] Further, the inclined surface of the deep micro-hole inclined ferrule 1 is a conical surface.

[0018] As mentioned above, the power-type laser fiber plug-in of the present invention, ...

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Abstract

The invention provides a power-type laser fiber plug-in and relates to the technical field of laser fiber plug-ins. The power-type laser fiber plug-in is composed of a deep micro-hole oblique-plane core insert (1) and a concentric metal shaft sleeve (2) in an embedded mode. The oblique-plane angle of the deep micro-hole oblique-plane core insert (1) is 5-10 degrees, and the core insert is made from a material low in dilatation coefficient. The center of the deep micro-hole oblique-plane core insert (1) is positioned to be matched with a fiber with the outer diameter of 125-1200 micros. The concentric metal shaft sleeve (2) is a metal sleeve having the um-level precision. The fiber large in core diameter is positioned to conduct high-power laser, so that laser beam spots output by the fiberare greatly improved. The heating spontaneous combustion phenomenon caused by fiber collimation and coupling structure factors and laser source damage caused by high-power laser reflection are avoided. A firm technical material basis is provided for laser cutting, welding, the safety of high-power laser conducting fiber in a medical minimally invasive technology and improvement of reliable and effective output powder.

Description

technical field [0001] The invention relates to the technical field of laser fiber inserts, in particular to a power-type laser fiber insert. Background technique [0002] With the further improvement and development of laser industrial processing and medical minimally invasive technology, the research and development of various high-power lasers have been promoted, and the use of fiber-optic transmission of high-power laser technology has formed a new approach and trend. In particular, in high-power laser cutting, welding, and medical minimally invasive technology, the laser transmission fiber is flexible, lightweight, anti-magnetic, explosion-proof, and shock-resistant, and can be bent arbitrarily within the allowable range of the curvature radius, safely and reliably transmitting the high-power laser beam flexibly It is accurately transmitted to the surface and interior of the object and workpiece, and the output laser beam energy is concentrated and the spot is uniform a...

Claims

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Application Information

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IPC IPC(8): G02B27/09G02B6/26
Inventor 吕剑雄贾锋
Owner SHANGHAI INST OF LASER TECH
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