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High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays
Plasmonic photoconductive antennas have great promise for increasing responsivity and detection sensitivity of conventional photoconductive detectors in time-domain terahertz imaging and spectroscopy systems. However, operation bandwidth of previously demonstrated plasmonic photoconductive antennas...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5311987/ https://www.ncbi.nlm.nih.gov/pubmed/28205615 http://dx.doi.org/10.1038/srep42667 |
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author | Yardimci, Nezih Tolga Jarrahi, Mona |
author_facet | Yardimci, Nezih Tolga Jarrahi, Mona |
author_sort | Yardimci, Nezih Tolga |
collection | PubMed |
description | Plasmonic photoconductive antennas have great promise for increasing responsivity and detection sensitivity of conventional photoconductive detectors in time-domain terahertz imaging and spectroscopy systems. However, operation bandwidth of previously demonstrated plasmonic photoconductive antennas has been limited by bandwidth constraints of their antennas and photoconductor parasitics. Here, we present a powerful technique for realizing broadband terahertz detectors through large-area plasmonic photoconductive nano-antenna arrays. A key novelty that makes the presented terahertz detector superior to the state-of-the art is a specific large-area device geometry that offers a strong interaction between the incident terahertz beam and optical pump at the nanoscale, while maintaining a broad operation bandwidth. The large device active area allows robust operation against optical and terahertz beam misalignments. We demonstrate broadband terahertz detection with signal-to-noise ratio levels as high as 107 dB. |
format | Online Article Text |
id | pubmed-5311987 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53119872017-02-23 High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays Yardimci, Nezih Tolga Jarrahi, Mona Sci Rep Article Plasmonic photoconductive antennas have great promise for increasing responsivity and detection sensitivity of conventional photoconductive detectors in time-domain terahertz imaging and spectroscopy systems. However, operation bandwidth of previously demonstrated plasmonic photoconductive antennas has been limited by bandwidth constraints of their antennas and photoconductor parasitics. Here, we present a powerful technique for realizing broadband terahertz detectors through large-area plasmonic photoconductive nano-antenna arrays. A key novelty that makes the presented terahertz detector superior to the state-of-the art is a specific large-area device geometry that offers a strong interaction between the incident terahertz beam and optical pump at the nanoscale, while maintaining a broad operation bandwidth. The large device active area allows robust operation against optical and terahertz beam misalignments. We demonstrate broadband terahertz detection with signal-to-noise ratio levels as high as 107 dB. Nature Publishing Group 2017-02-16 /pmc/articles/PMC5311987/ /pubmed/28205615 http://dx.doi.org/10.1038/srep42667 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Yardimci, Nezih Tolga Jarrahi, Mona High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays |
title | High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays |
title_full | High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays |
title_fullStr | High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays |
title_full_unstemmed | High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays |
title_short | High Sensitivity Terahertz Detection through Large-Area Plasmonic Nano-Antenna Arrays |
title_sort | high sensitivity terahertz detection through large-area plasmonic nano-antenna arrays |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5311987/ https://www.ncbi.nlm.nih.gov/pubmed/28205615 http://dx.doi.org/10.1038/srep42667 |
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