Open AccessLongitudinal polarized focusing of radially polarized sinh-Gaussian beam
Author(s) -
Jie Lin,
Yuan Ma,
Peng Jin,
Graham Davies,
Jiubin Tan
Publication year - 2013
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.21.013193
Subject(s) - optics , superposition principle , gaussian beam , physics , beam (structure) , gaussian , m squared , laser beam quality , aperture (computer memory) , hyperbolic function , radial polarization , beam diameter , laser beams , mathematics , mathematical analysis , quantum mechanics , acoustics , laser
We consider the focusing performance of a radially polarized sinh-Gaussian beam. The sinh-Gaussian beam can be considered as superposition of a series of eccentric Gaussian beam. Based on the Richards-Wolf formulas, high beam quality and subwavelength focusing are achieved for the radially polarized incident sinh-Gaussian beam. Therefore, sinh-Gaussian beam can be applied in the focusing system with high numerical aperture to achieve focusing with superresolution.