On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches

[Image: see text] We report on the use of graphene for room temperature on-chip detection and generation of pulsed terahertz (THz) frequency radiation, exploiting the fast carrier dynamics of light-generated hot carriers, and compare our results with conventional low-temperature-grown gallium arseni...

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Detalles Bibliográficos
Autores principales: Hunter, Nicholas, Mayorov, Alexander S., Wood, Christopher D., Russell, Christopher, Li, Lianhe, Linfield, Edmund H., Davies, A. Giles, Cunningham, John E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2015
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4370719/
https://www.ncbi.nlm.nih.gov/pubmed/25710079
http://dx.doi.org/10.1021/nl504116w
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author Hunter, Nicholas
Mayorov, Alexander S.
Wood, Christopher D.
Russell, Christopher
Li, Lianhe
Linfield, Edmund H.
Davies, A. Giles
Cunningham, John E.
author_facet Hunter, Nicholas
Mayorov, Alexander S.
Wood, Christopher D.
Russell, Christopher
Li, Lianhe
Linfield, Edmund H.
Davies, A. Giles
Cunningham, John E.
author_sort Hunter, Nicholas
collection PubMed
description [Image: see text] We report on the use of graphene for room temperature on-chip detection and generation of pulsed terahertz (THz) frequency radiation, exploiting the fast carrier dynamics of light-generated hot carriers, and compare our results with conventional low-temperature-grown gallium arsenide (LT-GaAs) photoconductive (PC) switches. Coupling of picosecond-duration pulses from a biased graphene PC switch into Goubau line waveguides is also demonstrated. A Drude transport model based on the transient photoconductance of graphene is used to describe the mechanism for both detection and generation of THz radiation.
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spelling pubmed-43707192015-03-31 On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches Hunter, Nicholas Mayorov, Alexander S. Wood, Christopher D. Russell, Christopher Li, Lianhe Linfield, Edmund H. Davies, A. Giles Cunningham, John E. Nano Lett [Image: see text] We report on the use of graphene for room temperature on-chip detection and generation of pulsed terahertz (THz) frequency radiation, exploiting the fast carrier dynamics of light-generated hot carriers, and compare our results with conventional low-temperature-grown gallium arsenide (LT-GaAs) photoconductive (PC) switches. Coupling of picosecond-duration pulses from a biased graphene PC switch into Goubau line waveguides is also demonstrated. A Drude transport model based on the transient photoconductance of graphene is used to describe the mechanism for both detection and generation of THz radiation. American Chemical Society 2015-02-24 2015-03-11 /pmc/articles/PMC4370719/ /pubmed/25710079 http://dx.doi.org/10.1021/nl504116w Text en Copyright © 2015 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Hunter, Nicholas
Mayorov, Alexander S.
Wood, Christopher D.
Russell, Christopher
Li, Lianhe
Linfield, Edmund H.
Davies, A. Giles
Cunningham, John E.
On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
title On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
title_full On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
title_fullStr On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
title_full_unstemmed On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
title_short On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
title_sort on-chip picosecond pulse detection and generation using graphene photoconductive switches
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4370719/
https://www.ncbi.nlm.nih.gov/pubmed/25710079
http://dx.doi.org/10.1021/nl504116w
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