Selective appearance of several laser-induced periodic surface structure patterns on a metal surface using structural colors produced by femtosecond laser pulses
Selective appearance of several laser-induced periodic surface structure patterns on a metal surface using structural colors produced by femtosecond laser pulses
复制标题
使用飞秒激光脉冲产生的结构颜色在金属表面上选择性地出现几种激光诱导的周期性表面结构图案
DOI：
10.1016/j.apsusc.2012.04.105
复制
发表时间：
2012-07-15
影响因子：
6.7
通讯作者：
Lysak, Tatiana M.
中科院分区：
文献类型：
--
作者：
Yao, Jianwu;Zhang, Chengyun;Lysak, Tatiana M.
利用飞秒激光脉冲在不锈钢（301 L）薄膜表面产生了亚波长周期的波纹。通过优化激光脉冲的照射能量密度和激光束的扫描速度，可以获得具有大振幅（类似于150 nm）和均匀周期的波纹，当用白色光照射表面时呈现生动的结构色。这表明，这些波纹作为一个表面光栅，有效地衍射光。涟漪取向对激光偏振的强烈依赖性为我们提供了用不同类型的波纹装饰表面不同区域的机会。结果，当白色光从不同方向照射在表面上时，可以用结构色选择性地显示不同的图案。更有趣的是，我们展示了用两种或多种不同方向的波纹装饰同一区域的可能性。通过这种方式，可以用结构色选择性地显示具有空间重叠的不同图案。该技术可应用于防伪、彩色显示、装饰、加密和光学数据存储等领域。(C)2012爱思唯尔有限公司版权所有。
Ripples with a subwavelength period were induced on the surface of a stainless steel (301 L) foil by femtosecond laser pulses. By optimizing the irradiation fluence of the laser pulses and the scanning speed of the laser beam, ripples with large amplitude (similar to 150 nm) and uniform period could be obtained, rendering vivid structural colors when illuminating the surface with white light. It indicates that these ripples act as a surface grating that diffracts light efficiently. The strong dependence of the ripple orientation on the polarization of laser light offers us the opportunity of decorating different regions of the surface with different types of ripples. As a result, different patterns can be selectively displayed with structural color when white light is irradiated on the surface from different directions. More interestingly, we demonstrated the possibility of decorating the same region with two or more types of ripples with different orientations. In this way, different patterns with spatial overlapping can be selectively displayed with structural color. This technique may find applications in the fields of anti-counterfeiting, color display, decoration, encryption and optical data storage. (C) 2012 Elsevier B.V. All rights reserved.