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Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit
We demonstrate broadband non-resonant squeezing of terahertz (THz) waves through an isolated 2-nm-wide, 2-cm-long slit (aspect ratio of 10(7)), representing a maximum intensity enhancement factor of one million. Unlike resonant nanogap structures, a single, effectively infinitely-long slit passes in...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208056/ https://www.ncbi.nlm.nih.gov/pubmed/25342288 http://dx.doi.org/10.1038/srep06722 |
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author | Chen, Xiaoshu Park, Hyeong-Ryeol Lindquist, Nathan C. Shaver, Jonah Pelton, Matthew Oh, Sang-Hyun |
author_facet | Chen, Xiaoshu Park, Hyeong-Ryeol Lindquist, Nathan C. Shaver, Jonah Pelton, Matthew Oh, Sang-Hyun |
author_sort | Chen, Xiaoshu |
collection | PubMed |
description | We demonstrate broadband non-resonant squeezing of terahertz (THz) waves through an isolated 2-nm-wide, 2-cm-long slit (aspect ratio of 10(7)), representing a maximum intensity enhancement factor of one million. Unlike resonant nanogap structures, a single, effectively infinitely-long slit passes incident electromagnetic waves with no cutoff, enhances the electric field within the gap with a broad 1/f spectral response, and eliminates interference effects due to finite sample boundaries and adjacent elements. To construct such a uniform, isolated slit that is much longer than the millimeter-scale spot of a THz beam, we use atomic layer lithography to pattern vertical nanogaps in a metal film over an entire 4-inch wafer. We observe an increasing field enhancement as the slit width decreases from 20 nm to 2 nm, in agreement with numerical calculations. |
format | Online Article Text |
id | pubmed-4208056 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-42080562014-10-27 Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit Chen, Xiaoshu Park, Hyeong-Ryeol Lindquist, Nathan C. Shaver, Jonah Pelton, Matthew Oh, Sang-Hyun Sci Rep Article We demonstrate broadband non-resonant squeezing of terahertz (THz) waves through an isolated 2-nm-wide, 2-cm-long slit (aspect ratio of 10(7)), representing a maximum intensity enhancement factor of one million. Unlike resonant nanogap structures, a single, effectively infinitely-long slit passes incident electromagnetic waves with no cutoff, enhances the electric field within the gap with a broad 1/f spectral response, and eliminates interference effects due to finite sample boundaries and adjacent elements. To construct such a uniform, isolated slit that is much longer than the millimeter-scale spot of a THz beam, we use atomic layer lithography to pattern vertical nanogaps in a metal film over an entire 4-inch wafer. We observe an increasing field enhancement as the slit width decreases from 20 nm to 2 nm, in agreement with numerical calculations. Nature Publishing Group 2014-10-24 /pmc/articles/PMC4208056/ /pubmed/25342288 http://dx.doi.org/10.1038/srep06722 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ |
spellingShingle | Article Chen, Xiaoshu Park, Hyeong-Ryeol Lindquist, Nathan C. Shaver, Jonah Pelton, Matthew Oh, Sang-Hyun Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit |
title | Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit |
title_full | Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit |
title_fullStr | Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit |
title_full_unstemmed | Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit |
title_short | Squeezing Millimeter Waves through a Single, Nanometer-wide, Centimeter-long Slit |
title_sort | squeezing millimeter waves through a single, nanometer-wide, centimeter-long slit |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208056/ https://www.ncbi.nlm.nih.gov/pubmed/25342288 http://dx.doi.org/10.1038/srep06722 |
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