Fabrication of two-dimensional periodic nanostructures by two-beam interference of femtosecond pulses.
Two-dimensional periodic nanostructures on ZnO crystal surface were fabricated by two-beam interference of 790 nm femtosecond laser. The long period is, as usually reported, determined by the interference pattern of two laser beams. Surprisingly, there is another short periodic nanostructures with periods of 220-270 nm embedding in the long periodic structures. We studied the periods, orientation, and the evolution of the short periodic nanostructures, and found them analogous to the self-organized nanostructures induced by single fs laser beam.
State Key Laboratory of Precise Spectroscopy, East China Normal University, Shanghai 200062, P.R. China. tqjia@phy.ecnu.edu.cn
Tianqing
T
Jia
Motoyoshi
M
Baba
Masayuki
M
Suzuki
Radish A
RA
Ganeev
Hiroto
H
Kuroda
Jianrong
J
Qiu
Xinshun
X
Wang
Ruxin
R
Li
Zhizhan
Z
Xu
D007834:Lasers; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D013499:Surface Properties / Q000528:radiation effects; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects*
D015034:Zinc Oxide