Approaching the upper limits of the local density of states via optimized metallic cavities
By computational optimization of air-void cavities in metallic substrates, we show that the local density of states (LDOS) can reach within a factor of ≈10 of recent theoretical upper limits and within a factor ≈4 for the single-polarization LDOS, demonstrating that the theoretical limits are nearly...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
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The Optical Society
2020
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| Online Access: | https://hdl.handle.net/1721.1/126500 |
| _version_ | 1811074292929003520 |
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| author | Yao, Wenjie Benzaouia, Mohammed Miller, Owen D. Johnson, Steven G |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Yao, Wenjie Benzaouia, Mohammed Miller, Owen D. Johnson, Steven G |
| author_sort | Yao, Wenjie |
| collection | MIT |
| description | By computational optimization of air-void cavities in metallic substrates, we show that the local density of states (LDOS) can reach within a factor of ≈10 of recent theoretical upper limits and within a factor ≈4 for the single-polarization LDOS, demonstrating that the theoretical limits are nearly attainable. Optimizing the total LDOS results in a spontaneous symmetry breaking where it is preferable to couple to a specific polarization. Moreover, simple shapes such as optimized cylinders attain nearly the performance of complicated many-parameter optima, suggesting that only one or two key parameters matter in order to approach the theoretical LDOS bounds for metallic resonators. |
| first_indexed | 2024-09-23T09:46:46Z |
| format | Article |
| id | mit-1721.1/126500 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:46:46Z |
| publishDate | 2020 |
| publisher | The Optical Society |
| record_format | dspace |
| spelling | mit-1721.1/1265002022-09-26T13:40:31Z Approaching the upper limits of the local density of states via optimized metallic cavities Yao, Wenjie Benzaouia, Mohammed Miller, Owen D. Johnson, Steven G Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Mathematics Yao, Wenjie By computational optimization of air-void cavities in metallic substrates, we show that the local density of states (LDOS) can reach within a factor of ≈10 of recent theoretical upper limits and within a factor ≈4 for the single-polarization LDOS, demonstrating that the theoretical limits are nearly attainable. Optimizing the total LDOS results in a spontaneous symmetry breaking where it is preferable to couple to a specific polarization. Moreover, simple shapes such as optimized cylinders attain nearly the performance of complicated many-parameter optima, suggesting that only one or two key parameters matter in order to approach the theoretical LDOS bounds for metallic resonators. Air Force Office of Scientific Research (Grant FA9550-17-1-0093) Defense Advanced Research Projects Agency (Grant HR0011-20-90016) Army Research Office (Grant W911NF-13-D-0001) 2020-08-06T20:38:35Z 2020-08-06T20:38:35Z 2020-07 2020-06 Article http://purl.org/eprint/type/JournalArticle 1094-4087 https://hdl.handle.net/1721.1/126500 Yao, Wenjie et al. "Approaching the upper limits of the local density of states via optimized metallic cavities." Optics Express 28, 16 (July 2020): 24185-24197 © 2020 Optical Society of America http://dx.doi.org/10.1364/oe.397502 Optics Express 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. application/pdf The Optical Society Wenjie Yao |
| spellingShingle | Yao, Wenjie Benzaouia, Mohammed Miller, Owen D. Johnson, Steven G Approaching the upper limits of the local density of states via optimized metallic cavities |
| title | Approaching the upper limits of the local density of states via optimized metallic cavities |
| title_full | Approaching the upper limits of the local density of states via optimized metallic cavities |
| title_fullStr | Approaching the upper limits of the local density of states via optimized metallic cavities |
| title_full_unstemmed | Approaching the upper limits of the local density of states via optimized metallic cavities |
| title_short | Approaching the upper limits of the local density of states via optimized metallic cavities |
| title_sort | approaching the upper limits of the local density of states via optimized metallic cavities |
| url | https://hdl.handle.net/1721.1/126500 |
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