Tomasz Czyszanowski (Institute of Physics, Lodz University of Technology, ul. Wólczańska 219, 90-924 Łódź, Poland.), Marcin Gębski (1. Institute of Physics, Lodz University of Technology, ul. Wólczańska 219, 90-924 Łódź, Poland. 2. Institute of Solid State Physics, Center of Nanophotonics, Technical University of Berlin, Hardenbergstraβe 36, 10632 Berlin, Germany.), James Lott (Institute of Solid State Physics, Center of Nanophotonics, Technical University of Berlin, Hardenbergstraβe 36, 10632 Berlin, Germany)