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利用飞秒激光成丝效应对2mm厚的聚甲基丙烯酸甲酯材料在空气环境下进行打孔实验,总结光丝长度随飞秒激光平均功率的变化,利用扫描电子显微镜初步分析深微孔的表面形貌并测量孔径的大小,然后分析孔径、深宽比以及锥度随激光平均功率和加工时间的变化规律。研究结果表明,随着飞秒激光平均功率的增大,孔径大小和锥度均有着明显的增大趋势,且深宽比下降。随着加工时间的增加,孔径变大,深宽比下降,锥度先增大后减小再增大,但总体上呈现增大趋势。
Using femtosecond laser wire-forming effect on the 2mm thick polymethylmethacrylate material in the air environment perforating experiments, summarizing the optical fiber length with the average power of femtosecond laser power changes, the use of scanning electron microscopy preliminary analysis of deep micropores Surface morphology and measuring the size of the aperture, and then analyze the aperture, aspect ratio and taper with the laser average power and processing time changes. The results show that with the increase of the average power of the femtosecond laser, the size of the aperture and the taper have a clear trend of increasing, and the aspect ratio decreases. With the increase of processing time, the aperture becomes larger, the aspect ratio decreases, the taper first increases, then decreases and then increases, but the overall trend shows an increasing trend.