A cladding light dissipation device
A cladding light and dissipation technology, applied in lasers, laser parts, structures/shapes of active media, etc., can solve problems such as reduced work reliability, increased thermal load of the device, and reduced laser beam output quality, etc. The effect of avoiding temperature rise, improving filtration efficiency and reducing filtration risk
Active Publication Date: 2019-07-26
CHINA WEAPON EQUIP RES INST
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Problems solved by technology
This device will cause the filtered light to reflect back through its own fiber groove and cover plate, be absorbed by the high-refractive-index UV-curable adhesive, and re-enter the cladding, increasing the heat load of the entire device, resulting in its working reliability drop, filtered light re-entering the fiber core degrades the laser beam output quality
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[0022] A cladding light dissipation device is characterized in that it includes a filter cover plate 1 and a filter bottom plate 2, wherein the filter cover plate 1 is covered on the filter bottom plate 2;
[0023] There is a black silicon nanostructure light absorption groove 15 longitudinally running through the lower surface of the filter cover plate 1, which is used to absorb the cladding light filtered out by the filter, and convert light energy into electrical energy for export;
[0024] On the lower surface of the filter cover plate 1, there are wire grooves perpendicular to the black silicon nanostructure light absorption groove 15 on both sides of the black silicon nanostructure light absorption groove 15, wherein the wire groove on one side is the first wire groove 11 and the first wire groove 11. The second wire groove 12, the wire groove on the other side is the third wire groove 13 and the fourth wire groove 14, on the lower surface of the filter cover plate 1, the...
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A cladding light dissipation device is characterized in that the device includes a filter cover plate (1) and a filter bottom plate (2), and the filter cover plate (1) covers the filter bottom plate (2); a black silicon nano structured light absorption slot (15) vertically passes through the lower surface of the filter cover plate (1), and is used for absorbing cladding light filtered by a filter, converting optical energy into electrical energy and guiding the electrical energy out; and on the lower surface of the filter cover plate (1), wire slots perpendicular to the black silicon nano structured light absorption slot (15) are respectively arranged on the two sides of the black silicon nano structured light absorption slot (15). In addition to having a filtering function like the conventional filter, the device can fully absorb light through the black silicon nano structured light absorption slot (15) on the filter cover plate and prevent light from returning to an optical fiber, and also can convert the absorbed cladding light into electricity which is guided out by a wire. Heat generated is dissipated or guided to the bottom plate. Thus, temperature rise of the filter is avoided, the temperature of the filter is reduced, and the work reliability is improved. The device improves the filtering efficiency, reduces the filtering risk, and ensures the reliability of the system and the quality of output beams.
Description
technical field [0001] The invention relates to a cladding light dissipation device, which belongs to the field of lasers, in particular to the technical field of cladding light filtering in fiber laser technology. Background technique [0002] High-power fiber lasers have the advantages of high conversion efficiency, good beam quality, convenient thermal management, and compact structure, and are widely used in industrial processing, cutting, marking, welding and other fields. At present, the fiber lasers above 1.5kW in the world basically adopt the main oscillation power amplification (MOPA) structure. In order to improve the output quality of the beam, for the pump light remaining in the cladding and the laser in the middle and high order modes, a cladding light filter (CLS) device made of high-refractive index UV-curable glue is generally used to filter them out. . However, the existing CLS generally has the disadvantages of high temperature and poor reliability, which...
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IPC IPC(8): H01S3/067
CPCH01S3/06704
Inventor 董超孙伟宫武鹏谷亮薛宇豪
Owner CHINA WEAPON EQUIP RES INST