Open AccessMulti-focus plasmonic lens design based on holography
Author(s) -
Pei Hui,
Hongtao Gao,
Qiling Deng,
Shi Yin,
Qi Qiu,
Chunlei Du
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.018689
Subject(s) - optics , finite difference time domain method , holography , nanophotonics , lens (geology) , plasmon , transformation optics , plane wave , focus (optics) , computer science , digital holography , cardinal point , physical optics , simulated annealing , physics , metamaterial , algorithm
Multi-focus plasmonic lens with metallic nanoslits of variant widths have great potential applications in optical interconnection, integrated optics and nanophotonics. But the design method with simulated annealing algorithm or Yang-Gu algorithm requires complex calculation and multi focuses are limited to be set on the same output plane. In this paper, we propose a design method based on holography. The desired light field distribution and the incident plane wave can be treated as object wave and reference wave, respectively. So the calculation is relative simple and multi focuses can be located in different output plane. Numerical simulation of multi-focus lens design is performed through finite-difference time-domain (FDTD) method and the result confirms the feasibility of our method.