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Kirjasto - Tampereen teknillinen yliopisto

Browsing by Author "Turunen, Jari"

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  • Husu, Hannu; Canfield, Brian K.; Laukkanen, Janne; Bai, Benfeng; Kuittinen, Markku; Turunen, Jari; Kauranen, Martti (2008)
    Second-harmonic generation from T-shaped gold nanodimers with nanogaps has different efficiencies for left- and right-hand circularly polarized fundamental light. The difference arises from the chiral symmetry breaking of ...
  • Canfield, Brian K.; Kujala, Sami; Laiho, Kaisa; Jefimovs, Konstantins; Turunen, Jari; Kauranen, Martti (2006)
    The symmetry of metal nanostructures may be broken by their overall features or small-scale defects. To separate the roles of these two mechanisms in chiral symmetry breaking, we prepare gold nanostructures with chirality ...
  • Turunen, Jari (1997-06-04)
    Nokia TETRA System is a new cellular network developed by the Professional Mobile Radio business unit of Nokia Telecommunications. The system is based on the recent, fully digital TETRA standard and it is specifically meant ...
  • Kuwata-Gonokami, Makoto; Saito, Nobuyoshi; Ino, Yusuke; Kauranen, Martti; Jefimovs, Konstantins; Vallius, Tuomas; Turunen, Jari; Svirko, Yuri (2005)
    We examine the spectral dependence in the visible frequency range of the polarization rotation of two-dimensional gratings consisting of chiral gold nanostructures with subwavelength features. The gratings, which do not ...
  • Canfield, Brian K.; Kujala, Sami; Jefimovs, Konstantins; Turunen, Jari; Kauranen, Martti (2004)
    An array of low-symmetry, L-shaped gold nanoparticles is shown to exhibit high sensitivity to the state of incident polarization. Small imperfections in the shape of the actual particles, including asymmetric arm lengths ...
  • Kujala, Sami; Canfield, Brian K.; Kauranen, Martti; Svirko, Yuri; Turunen, Jari (2008)
    We present a multipolar tensor analysis of second-harmonic radiation from arrays of noncentrosymmetric L-shaped gold nanoparticles. Our approach is based on the fundamental differences in the radiative properties of electric ...
  • Kujala, Sami; Canfield, Brian K.; Kauranen, Martti; Svirko, Yuri; Turunen, Jari (2007)
    We provide experimental evidence of higher multipole (magnetic dipole and electric quadrupole) radiation in second-harmonic (SH) generation from arrays of metal nanoparticles. Fundamental differences in the radiative ...
  • Volkov, S.N.; Dolgaleva, Ksenia; Boyd, Robert W.; Jefimovs, Konstantins; Turunen, Jari; Svirko, Yuri; Canfield, Brian K.; Kauranen, Martti (2009)
    We prepare diffractive planar arrays of metal nanoparticles that are chiral because of either the shape of individual particles (“molecular” chirality) or the orientation of achiral particles in the array (“structural” ...
  • Canfield, Brian K.; Kujala, Sami; Kauranen, Martti; Jefimovs, Konstantins; Vallius, Tuomas; Turunen, Jari (2005)
    In an array of low-symmetry, L-shaped gold nanoparticles, slight distortions of particle shape and arm lengths eliminate the array’s mirror plane. Such asymmetries induce large angular shifts ( ∼ 10°) of the resonant ...