Garcell Erik M, Lam Billy, Guo Chunlei
The Institute of Optics, University of Rochester, Rochester, NY 14627, USA.
Changchun Institute of Optics, Fine Mechanics, and Physics, Changchun 130033, China.
Appl Phys A Mater Sci Process. 2018 May 2;124:405. doi: 10.1007/s00339-018-1822-z. eCollection 2018.
Femtosecond laser-induced herringbone patterns are formed on copper (Cu). These novel periodic structures are created following s-polarized, large incident angle, femtosecond laser pulses. Forming as slanted and axially symmetric laser-induced periodic surface structures along the side walls of ablated channels, the result is a series of v-shaped structures that resemble a herringbone pattern. Fluence mapping, incident angle studies, as well as polarization studies have been conducted and provide a clear understanding of this new structure.
飞秒激光在铜（Cu）上诱导形成了人字形图案。这些新颖的周期性结构是在s偏振、大入射角的飞秒激光脉冲作用下产生的。沿着烧蚀通道的侧壁形成倾斜且轴对称的激光诱导周期性表面结构，结果是一系列类似人字形图案的V形结构。已经进行了能量密度映射、入射角研究以及偏振研究，从而对这种新结构有了清晰的认识。
