Extraordinary optical transmission and vortex excitation by periodic arrays of Fresnel zone plates

Bulletin of the Polish Academy of Sciences. Technical Sciences

A. RoszkiewiczInstitute of Fundamental Technological Research, Polish Academy of Sciences, 5b Adolfa Pawi?skiego St., 02-106 Warsaw, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  W. NasalskiCorresponding authorInstitute of Fundamental Technological Research, Polish Academy of Sciences, 5b Adolfa Pawi?skiego St., 02-106 Warsaw, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Institute of Fundamental Technological Research, Polish Academy of Sciences, 5b Adolfa Pawi?skiego St., 02-106 Warsaw, Poland

关键词: Keywords : Fresnel zone plates;    focusing;    cross-polarisation coupling;    optical vortices;   

DOI  :  10.2478/bpasts-2013-0092

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

Extraordinary optical transmission and good focusing properties of a two-dimensional scattering structure is presented. The structure is made of Fresnel zone plates periodically arranged along two orthogonal directions. Each plate consists of two ring-shaped waveguides supporting modes that match the symmetry of a circularly polarized incident plane wave. High field concentration at the focal plane is obtained with the short transverse and long longitudinal foci diameters. Optical vortex excitation in a paraxial region of the transmitted field is also observed and analysed in terms of cross-polarisation coupling. The structure presented may appear useful in visualization, trapping and precise manipulations of nanoparticles.

【 授权许可】

Unknown