Fiber laser micro-channeling on polymethyl methacrylate (PMMA) workpiece has been carried out to determine the effect of process parameters as well as optimum values of the responses, i.e., cut width and depth of the fabricated micro-channels. Response surface methodology-based analysis has been carried out by conducting experiments as per experimental design by varying scan speed of 10–30 mm/s; pulse frequency from 50 to 90 kHz; laser power of 5–15 W and the number of pass from 1 to 5. The mechanism behind the fiber laser-fabricated micro-channels on PMMA at 1064 nm wavelength has been discussed and analyzed. A sensitivity analysis of the process parameters on cut width and depth has also been carried out to determine the critical parameter influencing the micro-channel geometry. The experimental results show that the sensitiveness of both cut width and depth are maximum for the number of passes as compared to the other process parameters. Finally, at an optimum combination of process parameters, the optimal values of cut width, and depth are achieved as 145.34 µm and 445.50 µm, respectively. Concerning the optimal values of the responses, the mean percentage errors are calculated below 5% from the optimized combination of process parameters. The present research work provides a technical guideline of fiber laser processing on PMMA at a fundamental wavelength.

已经对聚甲基丙烯酸甲酯（PMMA）工件进行了光纤激光微通道加工，以确定工艺参数的影响以及响应的最佳值，即所加工微通道的切割宽度和深度。通过根据实验设计，通过改变10–30 mm / s的扫描速度进行实验，进行了基于响应面方法的分析。脉冲频率从50到90 kHz; 激光功率为5–15 W，传输次数为1至5。对在PMMA上1064 nm波长上光纤激光制造的微通道的机理进行了讨论和分析。还对切割宽度和深度的工艺参数进行了敏感性分析，以确定影响微通道几何形状的关键参数。实验结果表明，与其他工艺参数相比，对于通过次数而言，切割宽度和深度的敏感性最高。最后，在最佳工艺参数组合下，切割宽度和深度的最佳值分别为145.34 µm和445.50 µm。关于响应的最佳值，从工艺参数的优化组合计算出平均百分比误差低于5％。本研究工作为在基本波长的PMMA上进行光纤激光加工提供了技术指导。关于响应的最佳值，从工艺参数的优化组合计算出平均百分比误差低于5％。本研究工作为在基本波长的PMMA上进行光纤激光加工提供了技术指导。关于响应的最佳值，从工艺参数的优化组合计算出平均百分比误差低于5％。本研究工作为在基本波长的PMMA上进行光纤激光加工提供了技术指导。