title: Influence of the higher-orders of diffraction on the pattern evolution for tightly focused beams.
abstract: The mechanism of the nonparaxial propagation for tightly focused beams is investigated in the view of the influence of the higher-orders of diffraction (HOD). The HOD induce novel propagation characteristics which are crucially different from those predicted by the traditional paraxial theory. Based on the management of HOD, we propose an approach on controlling the intensity pattern of the focus to satisfy the application requirements.
authors.affiliation: Laboratory of Photonic Information Technology, South China Normal University, Guangzhou, China.
authors.forename: Daquan
authors.initials: D
authors.lastname: Lu
authors.forename: Zhenjun
authors.initials: Z
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: Hu