Open AccessOptical absorption of two dimensional periodic microstructures on ZnO crystal fabricated by the interference of two femtosecond laser beams
Author(s) -
Xiaojun Jia,
Tianqing Jia,
Yi Zhang,
Pingxin Xiong,
Donghai Feng,
Zhenrong Sun,
Zhizhan Xu
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.014401
Subject(s) - femtosecond , materials science , optics , microstructure , interference (communication) , laser , crystal (programming language) , absorption (acoustics) , scattering , mie scattering , light scattering , optoelectronics , composite material , physics , channel (broadcasting) , electrical engineering , computer science , programming language , engineering
Two dimensional (2D) periodic microstructures composed of short periodic ripples, long periodic ripples and micro-holes are fabricated on ZnO crystals via the interference of two femtosecond laser beams. The relative reflectivity and transmissivity of visible light of these 2D microstructures decrease to the values of 30% and 20%, respectively. Theoretical and experimental studies indicate that besides the effects of increased surface area, the decrease of reflectivity is influenced greatly by the Mie scattering of surface microstructures, and the transmissivity, by the damage of crystalline structures.