Fabrication of two-dimensional periodic nanostructures by two-beam interference of femtosecond pulses
Tianqing JiaState Key Laboratory of Precise Spectroscopy, East China Normal University, Shanghai 200062, P.R. China. [email protected]Motoyoshi BabaThe Institute for Solid State Physics, The University of Tokyo, Chiba 2778581, JapanMasayuki SuzukiThe Institute for Solid State Physics, The University of Tokyo, Chiba 2778581, JapanRadish A. GaneevThe Institute for Solid State Physics, The University of Tokyo, Chiba 2778581, JapanHiroto KurodaThe Institute for Solid State Physics, The University of Tokyo, Chiba 2778581, JapanJianrong QiuState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 800-211, P.R. ChinaXinshun WangState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 800-211, P.R. ChinaRuxin LiState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 800-211, P.R. ChinaZhizhan XuState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 800-211, P.R. China
2008en
ABI
Annotatsiya
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.
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