Colorizing silicon surface with regular nanohole arrays induced by femtosecond laser pulses
- Resource Type
- Article
- Authors
- Zhang, Cheng-Yun; Yao, Jian-Wu; Liu, Hai-Ying; Dai, Qiao-Feng; Wu, Li-Jun; Lan, Sheng; Trofimov, Vyacheslav A.; Lysak, Tatiana M.
- Source
- Optics Letters; March 2012, Vol. 37 Issue: 6 p1106-1108, 3p
- Subject
- Language
- ISSN
- 01469592; 15394794
We report on the formation of one- and two-dimensional (1D and 2D) nanohole arrays on the surface of a silicon wafer by scanning with a femtosecond laser with appropriate power and speed. The underlying physical mechanism is revealed by numerical simulation based on the finite-difference time-domain technique. It is found that the length and depth of the initially formed gratings (or ripples) plays a crucial role in the generation of 1D or 2D nanohole arrays. The silicon surface decorated with such nanohole arrays can exhibit vivid structural colors through efficiently diffracting white light.