Open AccessAn experimental study of the plasmonic Talbot effect
Author(s) -
Weiwei Zhang,
Chenglong Zhao,
Jiayuan Wang,
Jiasen Zhang
Publication year - 2009
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.17.019757
Subject(s) - talbot effect , optics , paraxial approximation , grating , surface plasmon polariton , plasmon , plasmonic lens , physics , surface plasmon , phase (matter) , amplitude , diffraction grating , diffraction , beam (structure) , quantum mechanics
The Talbot effect of the surface plasmon polaritons (SPPs) using SPP launching gratings is studied experimentally. Talbot carpets are obtained and the Talbot distance is given when the paraxial approximation is not satisfied. Multi-layer and multi-level-phase launching gratings are designed to enhance the intensities of the amplitude-modulated revivals. Effective focusing of SPPs with multiple focal spots and a subwavelength full width at half maximum is obtained by using a three-layer four-level-phase launching grating.