1. Center of Materials Technology and Photonics
2. School of Applied Technology
3. Technological Educational Institute of Crete
4. 710 04 Heraklion, Greece
5. Department of Materials Science and Technology
6. University of Crete
7. 710 03 Heraklion, Greece
8. Department of Physics
9. Institute of Electronic Structure and Laser
10. Electrical Engineering Department