1. Institute of Electronic Structure and Laser Foundation for Research and Technology - Hellas; Heraklion 71110 Crete Greece
2. Center of Materials Technology and Photonics & Electrical Engineering Department, School of Applied Technology; Technological Educational Institute (TEI) of Crete; Heraklion 71004 Crete Greece
3. Department of Materials Science and Technology; University of Crete; Heraklion 71003 Greece