Title

Broadband Infrared Binary-Pattern Metasurface Absorbers with Micro-Genetic Algorithm Optimization

Abstract

Broadband binary-pattern metasurface absorbers are designed and demonstrated in the mid-infrared wavelength range through the micro-genetic algorithm. The tungsten-based metasurface absorbers with the optimized binary-pattern nanostructures exhibit broadband near-perfect absorption due to the multiple plasmonic resonances supported within the unit cell. Furthermore, the influence of minor pixel modifications in the optimized binary-pattern nanostructures on the absorption performance is investigated in the experiment. This Letter presents a promising approach to design and optimize complex optical nanostructures with the desired properties for metamaterial and metasurface applications.

Department(s)

Mechanical and Aerospace Engineering

Comments

National Science Foundation (NSF) (DMR1552871, ECCS-1653032); Office of Naval Research (ONR) (N00014-16-1-2408); Intelligent Systems Center (ISC) and Materials Research Center (MRC) at Missouri S&T; U.S. Department of Energy (DOE), Office of Science (DE-AC02-06CH11357).

Keywords and Phrases

Genetic algorithms; Plasmonics; Absorption performance; Binary patterns; Metasurface; Micro genetic algorithm; Mid-infrared wavelength ranges; Optical nanostructures; Pixel modification; Plasmonic resonances; Nanostructures

International Standard Serial Number (ISSN)

0146-9592; 1539-4794

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Optical Society of America (OSA), All rights reserved.

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