(Peer-Reviewed) Large-area straight, regular periodic surface structures produced on fused silica by the interference of two femtosecond laser beams through cylindrical lens
Long Chen 陈龙 ¹ ², Kaiqiang Cao 曹凯强 ¹, Yanli Li 李艳丽 ¹, Jukun Liu 刘聚坤 ¹, Shian Zhang 张诗按 ¹, Donghai Feng 冯东海 ¹, Zhenrong Sun 孙真荣 ¹, Tianqing Jia 贾天卿 ¹ ²
¹ State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
中国 上海 华东师范大学物理与电子科学学院 精密光谱科学与技术国家重点实验室
² Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
中国 太原 山西省极端光学协同创新中心
Opto-Electronic Advances, 2021-12-25
Abstract
Inhomogeneity and low efficiency are two important factors that limit the application of laser-induced periodic surface structures (LIPSSs), especially on glass surfaces. In this study, two-beam interference (TBI) of femtosecond lasers was used to produce large-area straight LIPSSs on fused silica using cylindrical lenses. Compared with those produced using a single circular or cylindrical lens, the LIPSSs produced by TBI are much straighter and more regular.
Depending on the laser fluence and scanning velocity, LIPSSs with grating-like or spaced LIPSSs are produced on the fused silica surface. Their structural colors are blue, green, and red, and only green and red, respectively. Grating-like LIPSS patterns oriented in different directions are obtained and exhibit bright and vivid colors, indicating potential applications in surface coloring and anti-counterfeiting logos.
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