1. School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
2. Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
3. School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
4. School of Veterinary Medicine, University of Kufa, Iraq
5. Laser and Optoelectronic Engineering Department, University of Technology -Iraq, Baghdad, Iraq
6. School of Chemistry, Trinity College Dublin, The University of Dublin, Dublin 4, Ireland
7. Department of Applied Physics, KTH – Royal Institute of Technology, Stockholm, Sweden