Surface structuring of fused silica with asymmetric femtosecond laser pulse bursts
Surface structuring of fused silica with asymmetric femtosecond laser pulse bursts
复制标题
DOI：
10.1364/josab.30.001352
复制
发表时间：
2013-05-01
影响因子：
1.9
通讯作者：
Solis, Javier
中科院分区：
文献类型：
--
作者：
Hernandez-Rueda, Javier;Siegel, Jan;Solis, Javier
熔融石英表面结构化已进行使用时间成形的飞秒激光脉冲。为此，我们设计了一个三角形的强度包络和不同的斜率符号和脉冲间的分离，实验产生的使用自制的时间脉冲整形器的脉冲群。我们已经发现，在表面烧蚀方面，具有减小的强度包络的脉冲群比具有增加的强度包络的脉冲群显著更有效。结果表明，随着脉冲间距的减小，材料中的激光能量耦合增强。使用拉伸单脉冲的烧蚀深度的研究进行了比较，获得的结果与不同的脉冲间隔的脉冲群。我们发现，最深的陨石坑是实现了0.5 ps的脉冲间隔和减少信封的突发。这种脉冲形式也引起了照射后的表面反射率的最大变化。结果进行了讨论，激光能量耦合效率是如何链接到时间脉冲形状。(C)2013年美国光学学会
Fused silica surface structuring has been performed using temporally shaped femtosecond laser pulses. For this purpose we have designed pulse bursts with a triangular intensity envelope and different slope sign and interpulse separation that were experimentally generated using a home-made temporal pulse shaper. We have found that pulse bursts with decreasing intensity envelopes are remarkably more efficient in terms of surface ablation than bursts with increasing intensity envelopes. The results reveal that laser energy coupling in the material is enhanced as the interpulse spacing decreases. A study of the ablation depth using stretched single pulses was carried out and compared to results obtained for pulse bursts with different interpulse spacing. We find that the deepest crater was achieved with bursts of 0.5 ps interpulse separation and decreasing envelope. This pulse form also induced the largest change of the surface reflectivity after irradiation. The results are discussed in terms of how the laser energy coupling efficiency is linked to the temporal pulse shape. (C) 2013 Optical Society of America