title: Longitudinal polarized focusing of radially polarized sinh-Gaussian beam.
abstract: 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.
authors.affiliation: Center of Ultra-precision Optoelectronic Instrument, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Lin
authors.forename: Yuan
authors.initials: Y
authors.lastname: Ma
authors.forename: Peng
authors.initials: P
authors.lastname: Jin
authors.forename: Graham
authors.initials: G
authors.lastname: Davies
authors.forename: Jiubin
authors.initials: J
authors.lastname: Tan