Kalle Ventola

Summary

Publications

  1. ncbi High phase retardation by waveguiding in slanted photonic nanostructures
    Kalle Ventola
    University of Eastern Finland, Department of Physics and Mathematics, Joensuu, Finland
    Opt Express 19:241-6. 2011
  2. ncbi High efficiency half-wave retardation in diffracted light by coupled waves
    Kalle Ventola
    Department of Physics and Mathematics, University of Eastern Finland, P O Box 111, FI 80101 Joensuu, Finland
    Opt Express 20:4681-9. 2012

Detail Information

Publications2

  1. ncbi High phase retardation by waveguiding in slanted photonic nanostructures
    Kalle Ventola
    University of Eastern Finland, Department of Physics and Mathematics, Joensuu, Finland
    Opt Express 19:241-6. 2011
    ..We present physical principle, numerical analysis of the phenomenon and designs for half-wave retarders. As an experimental result, a slanted grating producing 177 degrees retardation and 95.5% efficiency is presented...
  2. ncbi High efficiency half-wave retardation in diffracted light by coupled waves
    Kalle Ventola
    Department of Physics and Mathematics, University of Eastern Finland, P O Box 111, FI 80101 Joensuu, Finland
    Opt Express 20:4681-9. 2012
    ..We present an experimental result with 58.9 % diffraction efficiency and a near perfect half-wave retardation. We explain the effect qualitatively using the classical coupled-wave approach...