微射流水导改善加工激光能量分布

卢希钊; 江开勇; 姜峰; 雷廷平

应用激光, 2015, 35 (2): 230, 网络出版: 2015-05-20

微射流水导改善加工激光能量分布

Laser Micro-jet Enhanced Processing Laser Energy Distribution

论文大纲

卢希钊 ^*江开勇姜峰雷廷平

作者单位

华侨大学机电及自动化学院, 福建厦门 361021

微射流水导激光高斯分布多模叠加平顶分布 laser micro-jet flatten uniform distribution multi-model laser superiposing phase stacking

摘要

微射流水导激光加工是利用Nd∶YAG激光在微射流击穿阈值中全反射传输作用于加工工件上, 加工激光经过不同轴方向速度的微射流水导传输后以不同模式叠加, 其加工峰值和能量分布得到改变。实验中, 激光在微射流中分布峰值下降, 光强分布均匀, 加工效果相当于提高并展宽脉冲宽度,达到加工阈值。从理论上分析激光在微射流分布影响下能量分布变化, 并模拟水导激光加工及波导传输机理, 分析对于激光加工效率的影响。研究结果对进一步系统地提高改善微射流水导激光加工质量, 尤其在以该加工方式参与的激光精密、超精密加工中, 提高其应用范围有着重要参考价值。

Abstract

In the traditional laser micro-jet, the multi-model Nd:YAG processing laser is transmitted through the Total Reflection in the flexible extending micro-jet and is reformed the traditional laser energy distribution. Due to the impact of the micro-jet, the energy distribution of laser micro-jet is reformed conventional laser Gaussian energy distribution into flattened uniform distribution, so that more of the processing laser has reached the processing threshold value, and involved in the processing. A series of validation experiments jets into guided to improve laser energy distribution more uniform energy distribution, in conclusion, processing efficiency will be enhanced and applied in the laser precise processing and super precise processing as well.

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卢希钊, 江开勇, 姜峰, 雷廷平. 微射流水导改善加工激光能量分布[J]. 应用激光, 2015, 35(2): 230. Lu Xizhao, Jiang Kaiyong, Jiang Feng, Lei Tingping. Laser Micro-jet Enhanced Processing Laser Energy Distribution[J]. APPLIED LASER, 2015, 35(2): 230.

微射流水导改善加工激光能量分布

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