Now showing items 317-336 of 467

  • Radiation damping in atomic photonic crystals 

    Horsley, S.A.R.; Artoni, M.; La Rocca, G.C. (American Physical Society, 2011)
    The force exerted on a material by an incident beam of light is dependent upon the material’s velocity in the laboratory frame of reference. This velocity dependence is known to be difficult to measure, as it is proportional ...
  • Radiation damping optical enhancement in cold atoms 

    Wu, Jin-Hui; Horsley, S.A.R.; Artoni, M.; La Rocca, G.C. (Nature Publishing Group, 2013)
    The typically tiny effect of radiation damping on a moving body can be amplified to a favorable extent by exploiting the sharp reflectivity slope at one edge of an optically induced stop-band in atoms loaded into an optical ...
  • Radiation pressure in stratified moving media 

    Horsley, S.A.R.; Artoni, M.; La Rocca, G.C. (American Physical Society, 2012)
    A general theory of optical forces on moving bodies is here developed in terms of generalized 4×4 transfer and scattering matrices. Results are presented for a planar dielectric of arbitrary refractive index placed in an ...
  • Radiation pressure on a moving body: Beyond the Doppler effect 

    Horsley, S.A.R.; Artoni, M.; La Rocca, G.C. (Optical Society of America, 2012)
    The dependence of macroscopic radiation pressure on the velocity of the object being pushed is commonly attributed to the Doppler effect. This need not be the case, and here we highlight velocity-dependent radiation pressure ...
  • Radiation-hydrodynamical simulations of massive star formation using Monte Carlo radiative transfer - I. Algorithms and numerical methods 

    Harries, Tim J. (Oxford University Press for Royal Astronomical Society, 2015-03-10)
    We present a set of new numerical methods that are relevant to calculating radiation pressure terms in hydrodynamics calculations, with a particular focus on massive star formation. The radiation force is determined from ...
  • Rapid switching in a dual-frequency hybrid aligned nematic liquid crystal cell 

    Jewell, Sharon A.; Taphouse, T. S.; Sambles, J. Roy (American Institute of Physics, 2005)
    We report the optical characterization of a dual-frequency hybrid aligned nematic (HAN) liquid crystal cell driven between two states using a multiple-frequency sinusoidal pulse. The complex dynamic director structure ...
  • Rate and nature of false positives in the CoRoT exoplanet search 

    Almenara, J.-M.; Deeg, H. J.; Aigrain, Suzanne; Alonso, R.; Auvergne, M.; Baglin, A.; Barbieri, M.; Barge, P.; Bordé, P.; Bouchy, F.; Bruntt, H.; Cabrera, J.; Carone, L.; Carpano, S.; Catala, C.; Csizmadia, Sz.; De la Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gandolfi, D.; Gillon, M.; Gondoin, P.; Guenther, E. W.; Guillot, T.; Hatzes, A.; Hébrard, G.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Loeillet, B.; Magain, P.; Mayor, M.; Mazeh, T.; Moutou, C.; Ollivier, M.; Pätzold, M.; Pont, F.; Queloz, D.; Rauer, H.; Régulo, C.; Renner, S.; Rouan, D.; Samuel, B.; Schneider, J.; Shporer, A.; Wuchterl, G.; Zucker, S. (EDP Sciences, 2009)
    Context. The CoRoT satellite searches for planets by applying the transit method, monitoring up to 12,000 stars in the galactic plane for 150 days in each observing run. This search is contaminated by a large fraction of ...
  • Rayleigh scattering by H2 in the extrasolar planet HD 209458b 

    Lecavelier des Etangs, A.; Vidal-Madjar, A.; Desert, J.-M.; Sing, David K. (EDP Sciences for European Southern Observatory (ESO), 2008)
    Transiting planets, such as HD 209458b, offer a unique opportunity to scrutinize the planetary atmospheric content. Although molecular hydrogen is expected to be the main atmospheric constituent, H2 remains uncovered ...
  • Rayleigh scattering in the transit spectrum of HD 189733b 

    Lecavelier des Etangs, A.; Pont, F.; Vidal-Madjar, A.; Sing, David K. (EDP Sciences for European Southern Observatory (ESO), 2008)
    The transit spectrum of the exoplanet HD 189733b has recently been obtained between 0.55 and 1.05 m. Here we present an analysis of this spectrum. We develop first-order equations to interpret absorption spectra. In the ...
  • Red blood cell thermal fluctuations: comparison between experiment and molecular dynamics simulations 

    Hale, John P.; Marcelli, Gianluca; Parker, Kim H.; Winlove, C. Peter; Petrov, Peter G. (Royal Society of Chemistry, 2009)
    We outline a new method of analysis of thermal shape fluctuations of red blood cells, based on comparison between experiments and coarse-grained molecular dynamics simulations. The fluctuations of 2D equatorial contours ...
  • Reduction of carrier mobility in semiconductors caused by charge-charge interactions 

    Hendry, Euan; Koeberg, Mattijs; Pijpers, J.; Bonn, Mischa (American Physical Society, 2007)
    We investigate the effect of charge-charge interactions on carrier mobility in titanium dioxide (TiO2) and silicon (Si) using terahertz spectroscopy. Charge scattering times and plasma frequencies are directly determined ...
  • Relationship between photonic band structure and emission characteristics of a polymer distributed feedback laser 

    Turnbull, G. A.; Andrew, P.; Jory, M. J.; Barnes, William L.; Samuel, I. D. W. (American Physical Society, 2001)
    We present an experimental study of the emission characteristics and photonic band structure of a distributed feedback polymer laser, based on the material poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene]. We ...
  • Remarkable transmission of microwaves through a wall of long metallic bricks 

    Hibbins, Alastair P.; Sambles, J. Roy; Lawrence, Christopher R.; Robinson, Donna M. (American Institute of Physics, 2001)
    The transmitted intensity of a microwave beam through a thick continuous metal wall will be effectively zero due to the almost complete exclusion of the electric field from the metal. However, it is shown here that by ...
  • Remarkable Zeroth-Order Resonant Transmission of Microwaves through a Single Subwavelength Metal Slit 

    Suckling, James R.; Sambles, J. Roy; Lawrence, Christopher R. (American Physical Society, 2005)
    A slit in a thick metal plate that is extremely subwavelength will not transmit microwaves polarized parallel to it. It is shown here that cuts perpendicular to the slit allow parallel polarized radiation to resonantly ...
  • Removing singular refractive indices with sculpted surfaces 

    Quevedo-Teruel, O; Horsley, S.A.R.; Hooper, Ian R.; Mitchell-Thomas, R.C. (Nature Publishing Group, 2014)
    The advent of Transformation Optics established the link between geometry and material properties, and has resulted in a degree of control over electromagnetic fields that was previously impossible. For waves confined to ...
  • Removing systematics from the CoRoT light curves. I. Magnitude-dependent zero point 

    Mazeh, T.; Guterman, P.; Aigrain, Suzanne; Zucker, S.; Grinberg, N.; Alapini, Aude; Alonso, R.; Auvergne, M.; Barbieri, M.; Barge, P.; Bordé, P.; Bouchy, F.; Deeg, H. J.; De la Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gondoin, P.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Magain, P.; Moutou, C.; Ollivier, M.; Pätzold, M.; Pont, F.; Queloz, D.; Rauer, H.; Rouan, D.; Sabo, R.; Schneider, J.; Wuchterl, G. (EDP Sciences, 2009)
    This paper presents an analysis that searched for systematic effects within the CoRoT exoplanet field light curves. The analysis identified a systematic effect that modified the zero point of most CoRoT exposures as a ...
  • Reply to “Comment on ‘Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell’ ” 

    Mazzulla, A.; Ciuchi, F.; Sambles, J. Roy (American Physical Society, 2003)
    In their Comment [G. Barbero and L. R. Evangelista, Phys. Rev. E 68, 023701] on our paper [A. Mazzulla, F. Ciuchi, and J. R. Sambles, Phys. Rev. E 64, 021708 (2001)], Barbero and Evangelista conclude that the procedure ...
  • Resonant absorption of electromagnetic fields by surface plasmons buried in a multilayered plasmonic nanostructure 

    Hibbins, Alastair P.; Murray, W. Andrew; Tyler, J.; Wedge, S.; Barnes, William L.; Sambles, J. Roy (American Physical Society, 2006)
    The optical reflectivity of a metal-dielectric-metal microcavity in which the upper layer is periodically perforated by narrow slits is explored. Complete characterization of the observed modes in terms of their resonant ...
  • 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 microwave transmission from a double layer of subwavelength metal square arrays: Evanescent handedness 

    Butler, Celia A.M.; Hobson, Peter A.; Hibbins, Alastair P.; Sambles, J. Roy (American Physical Society, 2012)
    A double layer of identical subwavelength metal patch arrays is experimentally shown to be electromagnetically chiral due to the evanescent coupling of the near fields between nonchiral layers—it exhibits “evanescent ...