Polarization-controlled microgroove arrays induced by femtosecond laser pulses
Polarization-controlled microgroove arrays induced by femtosecond laser pulses
复制标题
DOI：
10.1063/1.5028197
复制
发表时间：
2018-06
影响因子：
3.2
通讯作者：
E. Garcell;Chunlei Guo
中科院分区：
文献类型：
--
作者：
E. Garcell;Chunlei Guo
使用脉冲飞秒激光照射，我们演示了在金属上的单个激光光斑内创建微槽阵列。这些凹槽的取向不限于平行于激光束传播的平面，而是可以以与平行成高达30°的任何角度取向。我们通过成比例地改变激光的偏振来控制微槽的方向。人们对极化、入射角和结构演化动力学进行了深入研究，以帮助我们理解这一现象。我们的研究表明，角微槽阵列的形成是由于缺陷聚焦烧蚀和偏振相关的激光诱导的周期性表面结构之间发生的反馈效应。使用脉冲飞秒激光照射，我们演示了在金属上的单个激光光斑内的微槽阵列的创建。这些凹槽的取向不限于平行于激光束传播的平面，而是可以以与平行成高达30°的任何角度取向。我们通过成比例地改变激光的偏振来控制微槽的方向。偏振，入射角和结构演化动力学已经被深入研究，以帮助我们理解这一现象。我们的研究表明，角微槽阵列的形成是由于缺陷聚焦烧蚀和偏振相关的激光诱导的周期性表面结构之间发生的反馈效应。
Using pulsed femtosecond laser irradiation, we demonstrate the creation of an array of microgrooves within a single laser spot on metals. The orientation of these grooves is not limited to being parallel to the plane of the laser beam's propagation but can orient at any angle up to 30° from parallel. We control the orientation of the microgrooves by proportionally varying the laser's polarization. Polarization, angle of incidence, and structural evolution dynamics have been thoroughly studied to help us understand this phenomenon. Our studies suggest that the formation of angled microgroove arrays is due to a feedback effect occurring between defect-focused ablation and polarization-dependent laser-induced periodic surface structures.Using pulsed femtosecond laser irradiation, we demonstrate the creation of an array of microgrooves within a single laser spot on metals. The orientation of these grooves is not limited to being parallel to the plane of the laser beam's propagation but can orient at any angle up to 30° from parallel. We control the orientation of the microgrooves by proportionally varying the laser's polarization. Polarization, angle of incidence, and structural evolution dynamics have been thoroughly studied to help us understand this phenomenon. Our studies suggest that the formation of angled microgroove arrays is due to a feedback effect occurring between defect-focused ablation and polarization-dependent laser-induced periodic surface structures.