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  • Two-Dimensional Local Density of States in Two-Dimensional Photonic Crystals 
    Fabre Sebastien; Asatryan Ara; Busch Kurt; Mcphedran Ross; Botten Lindsay; De Sterke C; Nicorovici Nicolae (Optical Society of America, 2001)
    We calculate the two-dimensional local density of states (LDOS) for two-dimensional photonic crystals composed of a finite cluster of circular cylinders of infinite length. The LDOS determines the dynamics of radiation ...
  • Symmetry and Degeneracy in Microstructural Optical Fibres 
    Steel Michael; White Thomas; De Sterke C; Mcphedran Ross; Botten Lindsay (Optical Society of America, 2001)
    The symmetry of an optical waveguide determines its modal degeneracies. A fiber with rotational symmetry of order higher than 2 has modes that either are nondegenerate and support the complete fiber symmetry or are twofold ...
  • Microwave Filters 
    Weily Andrew; Sanagavarapu Ananda (Wiley, 2001)
    The CAD of dual-mode HE11 dielectric resonator (DR) microwave filters is extended to include time-domain methods. S-parameters are computed for a four-pole dual-mode HE11 DR filter using the FDTD over both wide and ...
  • Strain Relation in GaNxP1-x Alloy: Effect on Optical Properties 
    Goldys Ewa; Chen W.; Phillips Matthew; Buyanova Irina; Xin H; Tu Charles (Elsevier Science, 2001)
    By using scanning electron microscopy and cathodoluminescence (CL), a decrease in radiative efficiency of GaNP alloy with increasing N content is seen due to the formation of structural defects. The defect formation is ...
  • Confinement Losses in Microstructured Optical Fibres 
    White Tom; Mcphedran Ross; De Sterke C; Botten Lindsay; Steel Michael (Optical Society of America, 2001)
    We describe a multipole formulation that can be used for high-accuracy calculations of the full complex propagation constant of a microstruetured optical fiber with a finite number of holes. We show how the imaginary part ...
  • Effects of Excitation Density on Cathodoluminescence from GaN 
    Phillips Matthew; Kucheyev Sergei; Williams Jim; Toth Milos; Jagadish Chennupati; Li Gang (American Institute of Physics, 2001)
    Wurtzite GaN epilayers are studied by cathodoluminescence (CL) spectroscopy. Results show that the intensities of donor-acceptor pair (DAP) and yellow luminescence (YL) peaks sublinearly depend on excitation density, ...
  • Cathodoluminescnece Depth Profiling of Ion-Implanted GaN 
    Phillips Matthew; Kucheyev Sergei; Williams Jim; Toth Milos; Jagadish Chennupati; Li Gang (American Institute of Physics, 2001)
    Cathodoluminescence (CL) spectroscopy shows that even relatively low-dose keY light-ion bombardment (corresponding to the generation of ~ 5 X 1019 vacancies/crrr') of wurtzite GaN results in a dramatic quenching of visible ...
  • Near Infra-Red Radiation Squeezing Through 20nm Voids in Obliquely Deposited Metal Films 
    Smith Geoffrey; Hossain A; Gentle Angus (American Institute of Physics, 2001)
    Obliquely deposited metal films which are nearly continuous, displaying several unexpected solar optical properties. Transmittance intensity, spectral character, preferred direction of incidence, and polarization ...
  • Local Observation and Spectroscopy of Optical Modes in Active Photonic Crystal Microcavity 
    Gerard Davy; Louvion Nicolas; Callard Segolene; Rahmani Adel; De Fornel Frederique; Mouette J; Letarte Xavier; Seassal Christian (Australia and New Zealand Third Sector Research, 2001)
    We report the direct, room-temperature, near-field mapping and spectroscopy of the optical modes of a photonic-crystal microcavity containing quantum wells. We use a near-field optical probe to reveal the imprint of the ...
  • Heavy metal pathways and archives in biological tissue 
    Orlic I.; Siegele R.; Menon D.; Markich S.; Cohen D.; Jeffree Ross; Mcphail D.; Sarbutt A.; Stelcer E. (Elsevier B.V., 2002)
    Nuclear milli and microprobes at the Australian Nuclear Science and Technology Organisation (ANSTO) were used to determine lead accumulation in native Australian plants and animals. Three species of eucalypt plants (Eucalyptus ...
  • Localfield correction for an interstitial impurity in a crystal 
    Rahmani Adel; Chaumet Patrick; Bryant Garnett (Optical Society of America, 2002)
    The local-field correction experienced by an interstitial impurity in a crystal with cubic symmetry is derived by use of a rigorous, self-consistent, semimicroscopic description of spontaneous emission in a microcavity. We ...
  • Coupled multipolar interactions in clusters of nanoparticles with metal shells 
    Smith Geoffrey; Pustovit Vladimir (Elsevier Science, 2002)
    Coupled multipolar interactions between spherical nanoparticles coated with metal nanoshells are shown to yield very different optical behaviour to those between all metal nanoparticles in the same configurations. Controlled ...
  • The Electronic Band Structure of Li2O Testing Theoretical Predictions using Electron Momentum Spectroscopy 
    Mikajlo, E. A.; Nixon, K. L.; Coleman, V. A.; Ford, M. J. (Institute of Physics Publishing, 2002)
    Using the technique of electron momentum spectroscopy (EMS) we have measured the oxygen 2p- and 2s-derived valence bands and lithium 1s-derived core level in lithium oxide. All three sets of bands have been measured in a ...
  • Multipole method for microstructured optical fibers. II. Implementation and results 
    Kuhlmey Boris; White Tom; Renversez Gilles; Maystre Daniel; Botten Lindsay; De Sterke C; Mcphedran Ross (Optical Society of America, 2002)
    We describe the numerical verifications of a multipole formulation for calculating the electromagnetic properties of the modes that propagate in microstructured optical fibers. We illustrate the application of this ...
  • Relationship between sample morphology and carrier diffusion length in GaN thin films. 
    Godlewski Marek; Goldys Ewa; Phillips Matthew; Bottcher T; Figge Stephan; Hommel Detlef; Czernecki R; Prystawko P; Leszczynski M; Perlin Piotr; Wisniewski P; Suski T; Bockowski M; Grzegory Izabella; Porowski Sylvek (Polish Academy of Science, 2002)
    Scanning and spot-mode cathodoluminescence investigations of homo- and hetero-epitaxial GaN films indicate a surprisingly small influence of their microstructure on overall intensity of a light emission . This we explain ...
  • Probleme spectral pour la propagation conique des ondes elastiques dans un reseau de fibres 
    Guenneau Sebastien; Poulton Christopher; Movchan Alexander (Elsevier, 2002)
    This Note is devoted to the analysis of elastic waves conically propagating through a doubly periodic array of cylindrical channels. A new method, based on a multiple scattering approach, has been proposed to reduce the ...
  • Elastic waves and homogenization in oblique periodic structures 
    Zalipaev Victor; Movchan Alexander; Poulton Christopher; Mcphedran Ross (Royal Society, 2002)
    A mathematical model has been constructed to describe elastic waves propagating in a two¿dimensional solid containing a doubly periodic parallelogram array of circular holes. A multipole expansion method is employed which ...
  • Magnetic-field-induced enhancement of terahertz emission from III-V semiconductor surfaces 
    Johnston Michael; Corchia A; Dowd Annette; Linfield Edmund; Davies A.; Mclaughlin Robert; Arnone Don; Pepper Michael (Elsevier, 2002)
    We discuss the origins of the magnetic-field-induced enhancement of terahertz (THz) emission from bulk semiconductor surfaces. The principal effect of the magnetic field is to rotate the THz dipole and hence dramatically ...
  • A method to measure the effective gas path length in the environmental or variable pressure scanning electron microscope 
    Gauvin Ranald; Griffin Brendan; Nockolds Clive; Phillips Matthew; Joy David (Wiley, 2002)
    A simple method is described to determine the effective gas path length when incident electrons scatter in the gas above the specimen. This method is based on the measurement of a characteristic x-ray line emitted from a ...
  • Multipole Method for Microstructured Optical Fibers. I. Formulation 
    White Tom; Kuhlmey Boris; Mcphedran Ross; Maystre Daniel; Renversez Gilles; De Sterke C; Botten Lindsay (Optical Society of America, 2002)
    We describe a multipole method for calculating the modes of microstructured optical fibers. The method uses a multipole expansion centered on each hole to enforce boundary conditions accurately and matches expansions with ...