Double-flat-topped light beam diamond polishing device and method based on homogenized optical fiber

By using a dual-flat-top beam diamond polishing device based on homogenized optical fiber, a multi-focal array with uniform energy is generated for parallel scanning, which solves the problem of low efficiency of single Gaussian beam laser polishing and realizes efficient and low-cost diamond polishing.

CN121715701AActive Publication Date: 2026-03-24SHANDONG UNIV
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Patent Information

Application Number
CN202610219603.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-24
Publication Date
2026-03-24
Estimated Expiration
2046-02-24

AI Technical Summary

Technical Problem

In existing diamond polishing technologies, single Gaussian beam laser polishing has low efficiency, while multi-beam devices have complex structures, high costs, and uneven energy distribution, making it difficult to meet the needs of large-scale industrial mass production.

Method used

A dual-flat-top beam diamond polishing device based on homogenized optical fiber is adopted. A multi-focus array with uniform energy and controllable spacing is generated through homogenized optical fiber and beam splitting and sub-transfer units. Multi-focus parallel scanning is realized by using a three-dimensional motion platform, which reduces the complexity and cost of the equipment.

Benefits of technology

It significantly improves the processing efficiency of diamond polishing, reduces the number of scans, lowers equipment manufacturing costs and maintenance difficulty, and achieves high-quality polishing results.

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Abstract

The invention discloses a double-flat-topped light beam diamond polishing device and method based on homogenized optical fibers, and relates to the technical field of semiconductor material laser processing. The light spot homogenizing unit homogenizes the pulse laser to obtain a square flat-topped light spot; the light spot shaping unit collimates the homogenized pulse laser into parallel light and adjusts the beam diameter; the beam splitting and sub-transfer unit splits the parallel light into two sub-light beams, the two sub-light beams are adjusted to be coplanar and parallel to each other, and the center-to-center distance between the two sub-light beams is adjustable; the laser processing head unit focuses the two sub-light beams on the surface of the diamond; and the three-dimensional motion platform is used for bearing the diamond and scanning and polishing the diamond. Multi-focus array parallel scanning increases the coverage area of single-time processing, the processing effect of traditional single-focus multi-time scanning can be achieved through one-time scanning, the scanning frequency is remarkably reduced, the processing time consumption is reduced, and the processing efficiency is improved.
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