Now showing items 96-115 of 135

  • The resonant electromagnetic fields of an array of metallic slits acting as Fabry-Perot cavities 

    Hibbins, Alastair P.; Lockyear, Matthew J.; Sambles, J. Roy (American Institute of Physics, 2006)
    Fabry-Perot cavities are perhaps the best known of the optical transmission resonators, with cavity field enhancement accomplished by two parallel and partially reflecting planes. Recently it has been shown that arrays of ...
  • Resonant transmission of microwaves through a finite length subwavelength metallic slit 

    Suckling, James R.; Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R. (Institute of Physics and Deutsche Physikalische Gesellschaft, 2005)
    The resonant transmission of microwaves polarized perpendicular to a single subwavelength slit of finite length is presented in detail. It is shown that the resonant frequency rises monotonically as slit length is reduced. ...
  • Resonant transmission of microwaves through a hexagonal array of holes in a thin metal layer 

    Suckling, James R.; Sambles, J. Roy; Lawrence, Christopher R. (Institute of Physics and Deutsche Physikalische Gesellschaft, 2007)
    Resonant transmission of microwaves through a hexagonal array of holes in a very thin aluminium layer is studied. The array of holes, with diameter much less than the incident wavelength, leads to a strong transmission ...
  • Resonant Transmission of Microwaves through a Narrow Metallic Slit 

    Yang, Fuzi; Sambles, J. Roy (American Physical Society, 2002)
    Strong resonant transmission of microwave radiation through a very narrow (much less than the radiation wavelength) metallic slit is recorded. The results show that a set of resonant self-coupled surface plasmons are excited ...
  • Resonant tunneling of light through thin metal films via strongly localized surface plasmons 

    Tan, W.-C.; Preist, T. W.; Sambles, J. Roy (American Physical Society, 2000)
    We present a theoretical model of the optical response of a silver film having narrow-grooved zero-order gratings on both sides. It is found that incident p-polarized photons can resonantly tunnel through such a metal film ...
  • Retrieving the susceptibility from time-resolved terahertz experiments 

    Schins, Juleon M.; Hendry, Euan; Bonn, Mischa; Muller, H. G. (American Institute of Physics, 2007)
    We present an analytical expression for the observed signal in time- and phase-resolved pump-probe studies, with particular emphasis on terahertz time-domain spectroscopy. Maxwell's equations are solved for the response ...
  • Sculpted-multilayer optical effects in two species of Papilio butterfly 

    Vukusic, Peter; Sambles, J. Roy; Lawrence, Christopher R.; Wakely, Gavin (Optical Society of America, 2001)
    The wing-scale microstructures associated with two species of Papilio butterfly are described and characterized. Despite close similarities in their structures, they do not exhibit analogous optical effects. With Papilio ...
  • Selective transmission through very deep zero-order metallic gratings at microwave frequencies 

    Went, H. E.; Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R.; Crick, A. P. (2000)
    Zero-order metal grating structures are found to give extraordinary selective transmission at microwave frequencies through the resonant excitation of coupled surface waves. The metal slat structures with dielectric spacings ...
  • Self-Organized Periodic Photonic Structure in a Nonchiral Liquid Crystal 

    Ruan, Lizhen; Sambles, J. Roy; Stewart, I. W. (American Physical Society, 2003)
    A hybrid-aligned cell of the smectic A liquid material 8CB gives two stable director configurations, one of which is periodic and gives strong diffraction of light. This photonic lattice director profile arises from ...
  • Sensing using differential surface plasmon ellipsometry 

    Hooper, Ian R.; Sambles, J. Roy (American Institute of Physics, 2004)
    In this work a differential ellipsometric method utilizing surface plasmons (SPs) for monitoring refractive index changes, which could be used in chemical and biological sensors, is presented. The method is based upon ...
  • Simultaneous ultrafast probing of intramolecular vibrations and photoinduced charge carriers in rubrene using broadband time-domain THz spectroscopy 

    Koeberg, Mattijs; Hendry, Euan; Schins, Juleon M.; van Laarhoven, Hendrik A.; Flipse, Cees F. J.; Reimann, Klaus; Woerner, Michael; Elsaesser, Thomas; Bonn, Mischa (American Physical Society, 2007)
    We determine the ultrafast frequency- and time-resolved complex dielectric responses of photoexcited, single-crystal rubrene in the frequency range of 10–30 THz (330–1000 cm−1) using ultrafast broadband THz spectroscopy. ...
  • Slow waves caused by cuts perpendicular to a single subwavelength slit in metal 

    Suckling, James R.; Sambles, J. Roy (Institute of Physics and Deutsche Physikalische Gesellschaft, 2007)
    Resonant transmission of microwaves through a subwavelength slit in a thick metal plate, into which subwavelength cuts have been made, is explored. Two orientations of the cuts, parallel and perpendicular to the long axis ...
  • 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 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 ...