1. Laser Research Group, Department of Physics, Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
2. Center of Excellence for Scientific Research Collaboration with MIT, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
3. Center of Excellence in Nanotechnology King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia