Rotationally symmetric colorization of metal surfaces through omnidirectional femtosecond laser-induced periodic surface structures
SCIE
SCOPUS
- Title
- Rotationally symmetric colorization of metal surfaces through omnidirectional femtosecond laser-induced periodic surface structures
- Authors
- Hwang, Taek Yong; SHIN, HEEDEUK; Lee, Hai Joong; Lee, Hyo Soo; Guo, Chunlei; Lee, Byounghwak
- Date Issued
- 2020-07-01
- Publisher
- OPTICAL SOC AMER
- Abstract
- Following femtosecond (fs) laser pulse irradiation, the formation of a new type of low-spatial-frequency laser-induced periodic surface structure (LSFL) patterns, namely, omnidirectional LSFLs (OD-LSFLs) with the periodic ordering of their orientations, are investigated on Ni in this Letter. Using a liquid crystal polymer patterned depolarizer, we periodically rotate the polarization of fs laser pulses across the laser spot and create OD-LSFLs by raster scanning fs laser pulses. We also show that the period of the OD-LSFL orientation rotation can be controlled with the defocused distance, and OD-LSFLs can significantly expand the viewing angle of the structural colors in the azimuthal direction without noticeable color degradations. (C) 2020 Optical Society of America
- Keywords
- FABRICATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/103882
- DOI
- 10.1364/OL.396375
- ISSN
- 0146-9592
- Article Type
- Article
- Citation
- OPTICS LETTERS, vol. 45, no. 13, page. 3414 - 3417, 2020-07-01
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