1. Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH); Heraklion 71110 Crete Greece
2. Technical University of Crete; 73100 Hania Greece
3. Electrical Engineering Department and Center of Materials Technology & Laser, School of Applied Technology, Technological Educational Institute of Crete; Heraklion 71004 Crete Greece
4. Department of Science; Holon Institute of Technology; P.O. Box 305 Holon 58102 Israel
5. Department of Materials and Interfaces; Weizmann Institute; Rehovot 76100 Israel
6. Department of Materials Science and Technology; University of Crete; 71003 Heraklion Crete Greece