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Surface plasmon waves for broadband THz spectroscopy

hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorMITROFANOV, O.
hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorNAVARRO-CÍA, M.
hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorMUECKSTEIN, R.
hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorNATRELLA, M.
hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorGRAHAM, C.
hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorRENAUD, C. C.
hal.structure.identifierDepartment of Electrical and Electronic Engineering [London] [DEEE]
dc.contributor.authorSEEDS, A. J.
hal.structure.identifierInstitute of Physics
dc.contributor.authorDOMINEC, F.
hal.structure.identifierInstitute of Physics
dc.contributor.authorKUZEL, P.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorDELAGNES, J. C.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorMOUNAIX, P.
dc.contributor.editorRazeghi
dc.contributor.editorM. and Tournie
dc.contributor.editorE. and Brown
dc.contributor.editorG. J.
dc.date.issued2014
dc.date.conference2014-01-31
dc.description.abstractEnIn this presentation we discuss application of broadband terahertz (THz) time-domain spectroscopy for probing subwavelength (micrometer) size objects. The problem of weak coupling between THz waves and sub-wavelength objects, which limits the use of THz spectroscopy to large samples, is mitigated by employing surface plasmon waves. In one implementation, THz surface waves, excited on a broad-band planar THz bow-tie antenna, are used to enhance the interaction with a small particle placed on the antenna surface. The surface field distribution near the particle is mapped with an integrated sub-wavelength aperture THz near-field probe. We demonstrate that imaging and probing of the subwavelength size dielectric particles (TiO<sub>2</sub> and SrTiO<sub>3</sub>) can be realized using the enhanced THz field between the antenna and the probe. We also discuss THz wave confinement using two sharp metallic needles. We demonstrate that in the near-field region of the needle tips, the electric field of THz pulses is concentrated to a volume smaller than (10 &mu;m)<sup>3</sup> without limiting the THz pulse bandwidth. Application of both methods for high spatial resolution imaging and spectroscopy will be discussed.
dc.language.isoen
dc.title.enSurface plasmon waves for broadband THz spectroscopy
dc.typeCommunication dans un congrès avec actes
dc.identifier.doi10.1117/12.2029352
dc.subject.halPhysique [physics]
bordeaux.page89931B
bordeaux.volume8993
bordeaux.countryUS
bordeaux.title.proceedingQuantum Sensing and Nanophotonic Devices XI
bordeaux.conference.citySan Francisco, Ca
bordeaux.peerReviewednon
hal.identifierhal-01555865
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01555865v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.date=2014&amp;rft.volume=8993&amp;rft.spage=89931B&amp;rft.epage=89931B&amp;rft.au=MITROFANOV,%20O.&amp;NAVARRO-C%C3%8DA,%20M.&amp;MUECKSTEIN,%20R.&amp;NATRELLA,%20M.&amp;GRAHAM,%20C.&amp;rft.genre=proceeding


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