1. University of Rennes, CNRS, ISCR – UMR 6226 Rennes F-35000 France
2. DTU Fotonik, Department of Photonics Engineering Technical University of Denmark Lyngby DK-2800 Kgs. Denmark
3. Institute of Electronic Materials Technology Wolczynska 133 Warsaw 01-919 Poland
4. Faculty of Physics University of Warsaw Pasteura 7 Warsaw 02-093 Poland
5. NORBLIS Ivs Virumgade 35D Virum 2830 Denmark