Open AccessOrientation-controllable self-organized microgratings induced in the bulk SrTiO_3 crystal by a single femtosecond laser beam
Author(s) -
Juan Song,
Xinshun Wang,
Xiaoli Hu,
Jian Xu,
Yang Liao,
Haiyi Sun,
Jianrong Qiu,
Zhizhan Xu
Publication year - 2007
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.15.014524
Subject(s) - optics , materials science , femtosecond , laser scanning , laser , perpendicular , scanning electron microscope , beam (structure) , grating , optoelectronics , physics , geometry , mathematics
Self-organized microgratings were induced in the bulk SrTiO(3) crystal by readily scanning the laser focus in the direction perpendicular to the laser propagation axis. The groove orientations of those gratings could be controlled by changing the irradiation pulse number per unit scanning length, which could be implemented either through adjusting the scanning velocity at a fixed pulse repetition rate or through varying the pulse repetition rate at a fixed scanning velocity. This high-speed method for fabrication of microgratings will have many potential applications in the integration of micro-optical elements. The possible formation mechanism of the self-organized microgratings is also discussed.