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Träfflista för sökning "L773:1094 4087 ;lar1:(oru);conttype:(refereed);hsvcat:1"

Sökning: L773:1094 4087 > Örebro universitet > Refereegranskat > Naturvetenskap

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1.
  • Lehmuskero, Anni, et al. (författare)
  • Plasmonic particles set into fast orbital motion by an optical vortex beam WARI SC, 1992, JOURNAL OF MODERN OPTICS, V39, P1097
  • 2014
  • Ingår i: Optics Express. - 1094-4087. ; 22:4, s. 4349-4356
  • Tidskriftsartikel (refereegranskat)abstract
    • We optically trap plasmonic gold particles in two dimensions and set them into circular motion around the optical axis using a helically phased vortex laser beam. The orbiting frequency of the particles reaches 86 Hz, which corresponds to a particle velocity of the order 1 mm per second, for an incident laser power of a few tens of milliwatts. The experimentally determined orbiting frequencies are found to be well in line with the notion that the beam carries an orbital angular momentum of ħl per photon.
2.
  • Miljkovic, Vladimir D., 1982-, et al. (författare)
  • Simulating light scattering from supported plasmonic nanowires
  • 2012
  • Ingår i: Optics Express. - 1094-4087. ; 20:10, s. 10816-10826
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a method for calculating the differential scattering cross sections from nanostructures close to an interface separating two semi-infinitive dielectric media. The method combines a fast finite element software (Comsol multiphysics), used for calculations of the fields around and inside the structure, and the Green's functions method, which is used to find the far field distribution from the calculated total fields inside the nanostructure. We apply the method to calculations of scattering spectra from silver nanowires supported by an air-glass interface, a system that is of high current interest in relation to various nanophotonics applications. The results are analyzed in relation to analytical models and compared to experimentally measured spectra, to which we find a good agreement. 
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Käll, Mikael, 1963-, (2)
Johansson, Peter, 19 ... (2)
Johansson, Mikael, (1)
Kall, Mikael (1)
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