Femtosecond laser-induced periodic surface structure on diamond film

Wu, Qihong; Ma, Yurong; Fang, Rongchuan; Liao, Yuan; Yu, Qingxuan; Chen, Xiangli; Wang, Kelvin
March 2003
Applied Physics Letters;3/17/2003, Vol. 82 Issue 11, p1703
Academic Journal
We report the laser-induced periodic surface structure (LIPSS) with periodicity about a quarter of the laser wavelength on unpolished diamond film treated by a P-polarized femtosecond laser. The short period LIPSS is parallel to the laser polarization and independent on the incidence angle. The LIPSS perpendicular to the laser polarization with periodicity shorter than a third of the laser wavelength slightly dependent on the incidence angle is also observed as well as the LIPSS perpendicular to the laser polarization with periodicity dependent on the incidence angle. The results are explained by interference of the incident laser and surface scattered wave related to the excited electrons during laser interactions with diamond, being in excellent agreement with a previously developed theory.


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