@article{388f342428ac4d72b887903608a6c804,
title = "Effect of surface roughening on femtosecond laser-induced ripple structures",
abstract = "The effect of surface roughness was studied on the formation of femtosecond laser-induced ripple structures for 4H-SiC. Of the two types of ripple structures, fine and coarse, the threshold fluence for the formation of the fine ripple was remarkably reduced on the surface roughened by intentional rubbing, while the threshold for the formation of the coarse ripple was not affected. The result suggests that the initial surface roughness plays a significant role only for the formation of fine ripples. A brief explanation will be given on the qualitative basis for the specific effect of surface morphology to the fine ripple formation.",
author = "Takuro Tomita and Keita Kinoshita and Shigeki Matsuo and Shuichi Hashimoto",
note = "Funding Information: The authors thank M. Yamaguchi of Technical Research Institute, Japan Society for The Promotion of Machine Industry for fruitful discussions and T. Okada, H. Kawahara, R. Kumai, and Y. Nakagawa of the University of Tokushima for technical assistance. The authors also acknowledge the financial support by the Japanese Ministry of Education, Culture, Sports, Science and Technology through a Grant-in-Aid for Young Scientists (B) (No. 17760056), and the project research grant by the Faculty of Engineering, The University of Tokushima.",
year = "2007",
doi = "10.1063/1.2720709",
language = "English",
volume = "90",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "15",
}