Bolometric detection of terahertz quantum cascade laser radiation with graphene-plasmonic antenna arrays

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dc.contributor.authorDegl'Innocenti, Riccardo
dc.contributor.authorXiao, Long
dc.contributor.authorKindness, Stephen J.
dc.contributor.authorKamboj, Varun S.
dc.contributor.authorWei, Binbin
dc.contributor.authorBraeuninger-Weimer, Philipp
dc.contributor.authorNakanishi, Kenichi
dc.contributor.authorAria, Adrianus Indrat
dc.contributor.authorHofmann, Stephan
dc.contributor.authorBeere, Harvey E.
dc.contributor.authorRitchie, David A.
dc.date.accessioned2017-05-02T12:42:33Z
dc.date.available2017-05-02T12:42:33Z
dc.date.issued2017-03-27
dc.description.abstractWe present a fast room temperature terahertz detector based on graphene loaded plasmonic antenna arrays. The antenna elements, which are arranged in series and are shorted by graphene, are contacting source and drain metallic pads, thus providing both the optical resonant element and the electrodes. The distance between the antenna’s arms of approximately 300 nm allows a strong field enhancement in the graphene region, when the incident radiation is resonant with the antennas. The current passing through the source and drain is dependent on the graphene’s conductivity, which is modified by the power impinging onto the detector as well as from the biasing back-gate voltage. The incident radiation power is thus translated into a current modification, with the main detection mechanism being attributed to the bolometric effect. The device has been characterized and tested with two bound to continuum terahertz quantum cascade lasers emitting at a single frequency around 2 THz and 2.7 THz yielding a maximum responsivity of ~2 mA W−1.en_UK
dc.identifier.citationRiccardo Degl'Innocenti, Long Xiao, Stephen J Kindness, et al., Bolometric detection of terahertz quantum cascade laser radiation with graphene-plasmonic antenna arrays. Journal of Physics D: Applied Physics, 2017, Volume 50, Number 17, Article number 174001en_UK
dc.identifier.issn0022-3727
dc.identifier.urihttp://dx.doi.org/10.1088/1361-6463/aa64bf
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11839
dc.language.isoenen_UK
dc.publisherIOP Publishingen_UK
dc.rightsAttribution 3.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/
dc.subjectgrapheneen_UK
dc.subjectbolometeren_UK
dc.subjectterahertzen_UK
dc.subjectquantum cascade laseren_UK
dc.titleBolometric detection of terahertz quantum cascade laser radiation with graphene-plasmonic antenna arraysen_UK
dc.typeArticleen_UK

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