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Title: On the design of random metasurface based devices

Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements that randomly sample a well-defined phase function. By analyzing the focusing performance of random metasurface lenses as a function of their density and the density of the phase-maps used to design them, we find that the performance of 1D metasurfaces is mostly governed by their density while 2D metasurfaces strongly depend on both the density and the near-field coupling configuration of the surface. The proposed approach is used to design all-polarization random metalenses at near infrared frequencies. Challenges, as well as opportunities of random metasurfaces compared to periodic ones are discussed. Our results pave the way to new approaches in the design of nanophotonic structures and devices from lenses to solar energy concentrators.
Authors:
 [1] ;  [1] ;  [1]
  1. Univ. of California, San Diego, CA (United States). Dept. of Electrical and Computer Engineering
Publication Date:
Grant/Contract Number:
EE0007341
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Univ. of California, San Diego, CA (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; engineering; optics and photonics
OSTI Identifier:
1500009

Dupré, Matthieu, Hsu, Liyi, and Kanté, Boubacar. On the design of random metasurface based devices. United States: N. p., Web. doi:10.1038/s41598-018-25488-4.
Dupré, Matthieu, Hsu, Liyi, & Kanté, Boubacar. On the design of random metasurface based devices. United States. doi:10.1038/s41598-018-25488-4.
Dupré, Matthieu, Hsu, Liyi, and Kanté, Boubacar. 2018. "On the design of random metasurface based devices". United States. doi:10.1038/s41598-018-25488-4. https://www.osti.gov/servlets/purl/1500009.
@article{osti_1500009,
title = {On the design of random metasurface based devices},
author = {Dupré, Matthieu and Hsu, Liyi and Kanté, Boubacar},
abstractNote = {Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements that randomly sample a well-defined phase function. By analyzing the focusing performance of random metasurface lenses as a function of their density and the density of the phase-maps used to design them, we find that the performance of 1D metasurfaces is mostly governed by their density while 2D metasurfaces strongly depend on both the density and the near-field coupling configuration of the surface. The proposed approach is used to design all-polarization random metalenses at near infrared frequencies. Challenges, as well as opportunities of random metasurfaces compared to periodic ones are discussed. Our results pave the way to new approaches in the design of nanophotonic structures and devices from lenses to solar energy concentrators.},
doi = {10.1038/s41598-018-25488-4},
journal = {Scientific Reports},
number = ,
volume = 8,
place = {United States},
year = {2018},
month = {5}
}

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