Inverse design of large-area metasurfaces
We present a computational framework for efficient optimization-based “inverse design” of large-area “metasurfaces” (subwavelength-patterned surfaces) for applications such as multi-wavelength/multi-angle optimizations, and demultiplexers. To optimize surfaces that can be thousands of wavelengths in...
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| Format: | Article |
| Language: | en_US |
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Optical Society of America
2018
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| Online Access: | http://hdl.handle.net/1721.1/119814 https://orcid.org/0000-0003-1647-4019 https://orcid.org/0000-0003-1219-0932 https://orcid.org/0000-0003-3605-6199 https://orcid.org/0000-0001-7327-4967 |
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| author | Capasso, Federico Pestourie, Raphael Perez Arancibia, Carlos Andres Lin, Zin Shin, Wonseok Johnson, Steven G |
| author2 | Massachusetts Institute of Technology. Department of Mathematics |
| author_facet | Massachusetts Institute of Technology. Department of Mathematics Capasso, Federico Pestourie, Raphael Perez Arancibia, Carlos Andres Lin, Zin Shin, Wonseok Johnson, Steven G |
| author_sort | Capasso, Federico |
| collection | MIT |
| description | We present a computational framework for efficient optimization-based “inverse design” of large-area “metasurfaces” (subwavelength-patterned surfaces) for applications such as multi-wavelength/multi-angle optimizations, and demultiplexers. To optimize surfaces that can be thousands of wavelengths in diameter, with thousands (or millions) of parameters, the key is a fast approximate solver for the scattered field. We employ a “locally periodic” approximation in which the scattering problem is approximated by a composition of periodic scattering problems from each unit cell of the surface, and validate it against brute-force Maxwell solutions. This is an extension of ideas in previous metasurface designs, but with greatly increased flexibility, e.g. to automatically balance tradeoffs between multiple frequencies or to optimize a photonic device given only partial information about the desired field. Our approach even extends beyond the metasurface regime to non-subwavelength structures where additional diffracted orders must be included (but the period is not large enough to apply scalar diffraction theory). |
| first_indexed | 2024-09-23T12:59:47Z |
| format | Article |
| id | mit-1721.1/119814 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:59:47Z |
| publishDate | 2018 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | mit-1721.1/1198142022-10-01T12:24:07Z Inverse design of large-area metasurfaces Capasso, Federico Pestourie, Raphael Perez Arancibia, Carlos Andres Lin, Zin Shin, Wonseok Johnson, Steven G Massachusetts Institute of Technology. Department of Mathematics Steven G. Johnson Pestourie, Raphael Perez Arancibia, Carlos Andres Lin, Zin Shin, Wonseok Johnson, Steven G We present a computational framework for efficient optimization-based “inverse design” of large-area “metasurfaces” (subwavelength-patterned surfaces) for applications such as multi-wavelength/multi-angle optimizations, and demultiplexers. To optimize surfaces that can be thousands of wavelengths in diameter, with thousands (or millions) of parameters, the key is a fast approximate solver for the scattered field. We employ a “locally periodic” approximation in which the scattering problem is approximated by a composition of periodic scattering problems from each unit cell of the surface, and validate it against brute-force Maxwell solutions. This is an extension of ideas in previous metasurface designs, but with greatly increased flexibility, e.g. to automatically balance tradeoffs between multiple frequencies or to optimize a photonic device given only partial information about the desired field. Our approach even extends beyond the metasurface regime to non-subwavelength structures where additional diffracted orders must be included (but the period is not large enough to apply scalar diffraction theory). 2018-12-21T14:19:28Z 2018-12-21T14:19:28Z 2018-12 Article http://purl.org/eprint/type/JournalArticle 1094-4087 http://hdl.handle.net/1721.1/119814 Pestourie, Raphaël et al. “Inverse Design of Large-Area Metasurfaces.” Optics Express 26, 26 (December 2018): 33732 © 2018 Optical Society of America https://orcid.org/0000-0003-1647-4019 https://orcid.org/0000-0003-1219-0932 https://orcid.org/0000-0003-3605-6199 https://orcid.org/0000-0001-7327-4967 en_US https://doi.org/10.1364/OE.26.033732 Optics Express Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Optical Society of America Prof. Johnson |
| spellingShingle | Capasso, Federico Pestourie, Raphael Perez Arancibia, Carlos Andres Lin, Zin Shin, Wonseok Johnson, Steven G Inverse design of large-area metasurfaces |
| title | Inverse design of large-area metasurfaces |
| title_full | Inverse design of large-area metasurfaces |
| title_fullStr | Inverse design of large-area metasurfaces |
| title_full_unstemmed | Inverse design of large-area metasurfaces |
| title_short | Inverse design of large-area metasurfaces |
| title_sort | inverse design of large area metasurfaces |
| url | http://hdl.handle.net/1721.1/119814 https://orcid.org/0000-0003-1647-4019 https://orcid.org/0000-0003-1219-0932 https://orcid.org/0000-0003-3605-6199 https://orcid.org/0000-0001-7327-4967 |
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