1. Faculty of ScienceCenter of Excellence for Physics and AstronomyChiang Mai UniversityChiang Mai 50200Thailand
2. Institute of Electronic Structure and LaserFoundation for Research & Technology‐HellasP.O. Box 1527, Vassilika Vouton711 10 HeraklionCreteGreece
3. Center of Materials Technology and PhotonicsSchool of EngineeringTechnological Educational Institute of Crete710 04 HeraklionCreteGreece
4. PhD's Degree Program in Applied PhysicsFaculty of ScienceGraduate School Chiang MaiChiang Mai UniversityChiang Mai 50200Thailand
5. Department of PhysicsUniversity of PatrasPatras 26504Greece
6. Department of Electrical EngineeringSchool of EngineeringTechnological Educational Institute of Crete710 04 HeraklionCreteGreece