Now showing items 112-131 of 142

  • Some considerations on the transmissivity of thin metal films 

    Hooper, Ian R.; Sambles, J. Roy (Optical Society of America, 2008)
    As interest in plasmonics grows the optical properties of thin metal films becomes increasingly significant. Here we explore the transmissivity of thin metal films at normal incidence, from the ultraviolet to microwaves, ...
  • Squeezing millimeter waves into microns 

    Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R.; Brown, James R. (American Physical Society, 2004)
    Microstructured metallic devices will play a vital role in the continuing search to manipulate the passage of electromagnetic radiation relevant to optical, microwave, and communication technologies. Here, we investigate ...
  • Strong coupling between surface plasmon-polaritons and organic molecules in subwavelength hole arrays 

    Dintinger, J.; Klein, S.; Bustos, F.; Barnes, William L.; Ebbesen, T. W. (American Physical Society, 2005)
    The interaction of a J-aggregate and surface plasmon polariton modes of a subwavelength hole array have been studied in detail. By measuring the effects of hole array period, angular dispersion and concentration of the ...
  • Strong exciton–photon coupling in a low-Q all-metal mirror microcavity 

    Hobson, Peter A.; Barnes, William L.; Lidzey, D. G.; Gehring, G. A.; Whittaker, D. M.; Skolnick, M. S.; Walker, S. (American Institute of Physics, 2002)
    We report the experimental observation of strong exciton–photon coupling in a planar microcavity composed of an organic semiconductor positioned between two metallic (silver) mirrors. Via transmission and reflectivity ...
  • Strongly coupled surface plasmons on thin shallow metallic gratings 

    Chen, Z.; Hooper, Ian R.; Sambles, J. Roy (American Physical Society, 2008)
    The optical response of a thin metallic film with shallow corrugations on both surfaces is explored and the structure is found to support a strongly coupled surface plasmon polariton when transverse magnetic radiation is ...
  • Surface lattice resonances in plasmonic arrays of asymmeric disc dimers (dataset) 

    Humphrey, Alastair D; Meinzer, Nina; Starkey, Timothy A; Barnes, William L. (University of Exeter, 2016-03)
    We study regular wavelength scale arrays of metallic dimers. By employing dimers made up of two different sized discs, we are able to couple to array-based collective surface lattice resonances of both bright and dark, ...
  • Surface lattice resonances in plasmonic arrays of asymmetric disc dimers 

    Humphrey, Alastair D.; Meinzer, Nina; Starkey, Timothy A.; Barnes, William L. (American Chemical Society, 2016-03-04)
    We study regular wavelength scale arrays of metallic dimers. By employing dimers made up of two different sized discs, we are able to couple to array-based collective surface lattice resonances of both bright and dark, ...
  • Surface plasmon mediated transmission of subwavelength slits at THz frequencies 

    Isaac, Thomas Henry; Gómez Rivas, J.; Sambles, J. Roy; Barnes, William L.; Hendry, Euan (American Physical Society, 2008)
    We present measurements and a numerical modeling that elucidate the role of surface plasmons in the resonant transmission of a subwavelength slit in a conducting material. By using THz time domain spectroscopy, we determine ...
  • Surface Plasmon Polaritons and Their Role in the Enhanced Transmission of Light through Periodic Arrays of Subwavelength Holes in a Metal Film 

    Barnes, William L.; Murray, W. Andrew; Dintinger, J.; Devaux, E.; Ebbesen, T. W. (American Physical Society, 2004)
    We present results of the transmitted, reflected, and absorbed power associated with the enhanced transmittance of light through a silver film pierced by a periodic array of subwavelength holes. Comparing experimentally ...
  • Surface plasmon polaritons on deep, narrow-ridged rectangular gratings 

    Gadsdon, Martyn Richard; Hooper, Ian R.; Hibbins, Alastair P.; Sambles, J. Roy (Optical Society of America, 2009)
    The dispersion diagrams of surface plasmon polaritons have been calculated for rectangular gratings, with very narrow wires, of varying depths. For gratings with a moderate height a family of vertical-standing-wave resonances ...
  • Surface plasmon polaritons on narrow-ridged short-pitch metal gratings 

    Hooper, Ian R.; Sambles, J. Roy (American Physical Society, 2002)
    The reflectivity of short pitch metal gratings consisting of a series of narrow Gaussian ridges in the classical mount has been modeled as a function of frequency and in-plane wave vector (the plane of incidence containing ...
  • Surface plasmon polaritons on thin-slab metal gratings 

    Hooper, Ian R.; Sambles, J. Roy (American Physical Society, 2003)
    In a recently published paper [U. Schröter and D. Heitmann, Phys. Rev. B 60, 4992 (1999)] an unexpected result occurred when light was incident upon a periodically corrugated thin metal film when the corrugations on the ...
  • Surface plasmon-polariton mediated emission from phosphorescent dendrimer light-emitting diodes 

    Yates, C. J.; Samuel, I. D. W.; Burn, P. L.; Wedge, S.; Barnes, William L. (American Institute of Physics, 2006)
    We present experimental results showing electroluminescence from a dendrimer based organic light-emitting diode (OLED) mediated via surface plasmon polariton (SPP) modes. A combination of angle dependent electroluminescence, ...
  • Surface plasmon-polariton study of the optical dielectric function of titanium nitride 

    Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R. (Taylor & Francis, 1998)
    This work presents the first detailed study of the optical dielectric function of optically thick TiNx films using grating coupling of radiation to surface plasmon-polaritons. Angle-dependent reflectivities are obtained ...
  • Surface plasmon-related resonances on deep and asymmetric gold gratings 

    Kreiter, M.; Mittler, S.; Knoll, W.; Sambles, J. Roy (American Physical Society, 2002)
    Based on theoretical calculations, the surface plasmonlike resonances on deep and asymmetric gold gratings are reinvestigated and assigned to two classes possessing different characteristic symmetry properties. Reflectivity ...
  • Surface plasmons on metamaterials 

    Hibbins, Alastair P.; Lockyear, Matthew J.; Sambles, J. Roy (SPIE, 2008)
    The field of plasmonics has historically been a playground exclusively for the optics community. Primarily this is because the response of metals becomes dominated by their large conductivities at much lower frequencies, ...
  • Surface-plasmon-enhanced light scattering from microscopic spheres 

    Jory, M. J.; Cann, P. S.; Sambles, J. Roy; Perkins, E. A. (American Institute of Physics, 2003)
    The enhanced light scattering from microscopic latex spheres placed in the optical field associated with a surface-plasmon resonance is explored. Spheres of 200 nm diameter are placed on an optically thin gold film that ...
  • Surface-topography-induced enhanced transmission and directivity of microwave radiation through a subwavelength circular metal aperture 

    Lockyear, Matthew J.; Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R. (American Institute of Physics, 2004)
    Strongly enhanced transmission of microwave radiation (λ0~5 mm) is observed through a single subwavelength circular aperture of diameter d = 2.5 mm in a metallic plate. The phenomenon is caused by resonant excitation of ...
  • Thin resonant structures for angle and polarization independent microwave absorption 

    Lockyear, Matthew J.; Hibbins, Alastair P.; Sambles, J. Roy; Hobson, Peter A.; Lawrence, Christopher R. (American Institute of Physics, 2009)
    We present a microwave absorbing structure comprised of an array of subwavelength radius copper disks, closely spaced from a ground plane by a low loss dielectric. Experiments and accompanying modeling demonstrate that ...
  • Time-resolved scanning Kerr microscopy of flux beam formation in hard disk write heads - Underlying research dataset 

    Valkass, Robert Alexander James; Spicer, Timothy M; Burgos Parra, Erick; Hicken, Robert James; Bashir, Muhammad A; Gubbins, Mark A; Czoschke, Peter J; Lopusnik, Radek (University of Exeter, 2016-04-14)
    Data behind the published paper "Time-resolved scanning Kerr microscopy of flux beam formation in hard disk write heads"