Please use this identifier to cite or link to this item: https://doi.org/10.3390/ma12071005
Title: Diffractive efficiency optimization in metasurface design via electromagnetic coupling compensation
Authors: Li, Y. 
Hong, M. 
Keywords: Coupling compensation
Diffractive efficiency
Metasurface
Issue Date: 2019
Publisher: MDPI AG
Citation: Li, Y., Hong, M. (2019). Diffractive efficiency optimization in metasurface design via electromagnetic coupling compensation. Materials 12 (7) : 1005. ScholarBank@NUS Repository. https://doi.org/10.3390/ma12071005
Rights: Attribution 4.0 International
Abstract: Metasurface is an advanced flat optical component that can flexibly manipulate the electromagnetic wave in an ultrathin dimension. However, electromagnetic coupling among neighbored optical elements decreases the diffractive efficiency and increases the noise. In this paper, a novel computational method is proposed to optimize the coupling of the metasurface. The coupled electric fields in metasurface design are decomposed into various coupling orders and then restructured to replace the whole metasurface simulation. This method is applied to optimize a metasurface that consisted of conventional nanorod plasmonic antennas as a case study. The convergence of this method in calculation is demonstrated. The electric field intensity deviation of a nanoantenna array can be reduced from 112.2% to 0.5% by the second-order coupling correction. The diffractive efficiency of a three-level phase meta-deflector is optimized from 73% to 86% by optimized coupling compensation via particle swarm optimization (PSO). This process opens a new area of metasurface design by the detailed field distribution of optical elements. © 2019 by the authors.
Source Title: Materials
URI: https://scholarbank.nus.edu.sg/handle/10635/212338
ISSN: 19961944
DOI: 10.3390/ma12071005
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_3390_ma12071005.pdf2.02 MBAdobe PDF

OPEN

NoneView/Download

SCOPUSTM   
Citations

5
checked on Sep 22, 2022

Page view(s)

57
checked on Sep 22, 2022

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons