Open AccessInfluence of the higher-orders of diffraction on the pattern evolution for tightly focused beams
Author(s) -
Daquan Lu,
Zhen-Jun Yang,
Wei Hu
Publication year - 2011
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.19.011170
Subject(s) - paraxial approximation , diffraction , optics , focus (optics) , ptychography , physics , intensity (physics) , light intensity , geometrical optics , physical optics , computer science , beam (structure)
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.