Overlapping domains for topology optimization of large-area metasurfaces
Name
oe-27-22-32445.pdf
Description
Published version
Size
5.06 MB
Format
Adobe PDF
Checksum (MD5)
b77d1207b1f3caf751c9a59ebfdef268
Author(s)
Lin, Zin
Johnson, Steven G
Date Issued
2019
Journal
Optics Express
Publisher
The Optical Society
Version
Final published version
Abstract
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement We introduce an overlapping-domain approach to large-area metasurface design, in which each simulated domain consists of a unit cell and overlapping regions from the neighboring cells plus PML absorbers. We show that our approach generates greatly improved metalens quality compared to designs produced using a locally periodic approximation, thanks to ∼ 10× better accuracy with similar computational cost. We use the new approach with topology optimization to design large-area (200λ) high-NA (0.71) multichrome and broadband achromatic lenses with high focusing efficiency (∼ 50%), greatly improving upon previously reported works.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1364/OE.27.032445
