1. Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran 14588-89694, Iran
2. Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa
3. Regional Center of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Šlechtitelů 27, Olomouc 78371, Czech Republic