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On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector

[Image: see text] We investigate a waveguide-integrated plasmonic graphene photodetector operating based on the hot carrier photo-bolometric effect, which is characterized simultaneously by high responsivity on the scale of hundreds of A/W and high speed on the scale of 100’s of GHz that is limited...

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Autores principales: Gosciniak, Jacek, Khurgin, Jacob B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7315610/
https://www.ncbi.nlm.nih.gov/pubmed/32596608
http://dx.doi.org/10.1021/acsomega.0c01308
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author Gosciniak, Jacek
Khurgin, Jacob B.
author_facet Gosciniak, Jacek
Khurgin, Jacob B.
author_sort Gosciniak, Jacek
collection PubMed
description [Image: see text] We investigate a waveguide-integrated plasmonic graphene photodetector operating based on the hot carrier photo-bolometric effect, which is characterized simultaneously by high responsivity on the scale of hundreds of A/W and high speed on the scale of 100’s of GHz that is limited only by the product of the electronic heat capacitance and thermal resistance. We develop a theory of the bolometric effect originating from the band nonparabolicity of graphene and estimate responsivity due to the bolometric effect, which is shown to significantly surpass the responsivity of the coexisting photoconductive effect, thus convincingly demonstrating the dominance of the bolometric effect. Based on the theory, we propose a novel detector configuration based on a hybrid waveguide that allows for efficient absorption in graphene over a short distance and subsequently a large change of conductivity. The results demonstrate the potential of graphene for high-speed communication systems.
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spelling pubmed-73156102020-06-26 On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector Gosciniak, Jacek Khurgin, Jacob B. ACS Omega [Image: see text] We investigate a waveguide-integrated plasmonic graphene photodetector operating based on the hot carrier photo-bolometric effect, which is characterized simultaneously by high responsivity on the scale of hundreds of A/W and high speed on the scale of 100’s of GHz that is limited only by the product of the electronic heat capacitance and thermal resistance. We develop a theory of the bolometric effect originating from the band nonparabolicity of graphene and estimate responsivity due to the bolometric effect, which is shown to significantly surpass the responsivity of the coexisting photoconductive effect, thus convincingly demonstrating the dominance of the bolometric effect. Based on the theory, we propose a novel detector configuration based on a hybrid waveguide that allows for efficient absorption in graphene over a short distance and subsequently a large change of conductivity. The results demonstrate the potential of graphene for high-speed communication systems. American Chemical Society 2020-06-08 /pmc/articles/PMC7315610/ /pubmed/32596608 http://dx.doi.org/10.1021/acsomega.0c01308 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Gosciniak, Jacek
Khurgin, Jacob B.
On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector
title On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector
title_full On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector
title_fullStr On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector
title_full_unstemmed On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector
title_short On-Chip Ultrafast Plasmonic Graphene Hot Electron Bolometric Photodetector
title_sort on-chip ultrafast plasmonic graphene hot electron bolometric photodetector
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7315610/
https://www.ncbi.nlm.nih.gov/pubmed/32596608
http://dx.doi.org/10.1021/acsomega.0c01308
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