Bulletin of the Polish Academy of Sciences. Technical Sciences | |
Extraordinary optical transmission and vortex excitation by periodic arrays of Fresnel zone plates | |
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
【 预 览 】
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