Haiying Song, Shengwang Tan, Elshaimaa M. Emara, Yanjie Zhang, Shibing Liu, Yao Li, Haiyun Liu. Effect of metal surface morphology on nano-structured patterns induced by a femtosecond laser pulse and its experimental verification[J]. Chinese Optics Letters, 2018, 16(7): 073202
- Chinese Optics Letters
- Vol. 16, Issue 7, 073202 (2018)
Fig. 1. AFM images of the prepared W metals: (a) polished surface, (b) non-polished surface.
Fig. 2. SEM pictures of periodic ripples induced by the fs laser on W metal surfaces: (a) polished, (b) non-polished.
Fig. 3. SEM pictures of periodic ripples induced by a fs laser on a metal surface with defects.
Fig. 4. SEM pictures of ripples achieved with different scanning times on the polished W surface: (a) one time, (b) two times, (c) three times, (d) four times, (e) five times, and (f) six times.
Fig. 5. Curve of ripple depth changes with scanning times.
Fig. 6. Overview of the experimental setup for nano-structures experiments using two beams with crossed light polarizations. BS is non-polarizing 50/50 beam splitter, PP is polarizing prism, Re is reflecting mirror, and TDL is a motorized time-delay-line.
Fig. 7. SEM images of nano-gratings produced by pulses with different crossed angles: (a) the electric field
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