Affiliation: | 1. Physics Department, University of Engineering & Technology, Lahore 54890, Pakistan;2. Department of Computer Science, Lahore College for Woman University, Lahore, Pakistan;3. Physics Department, Forman Christian College University Lahore, Pakistan;4. National Institute of Laser and Optronics (NILOP), P.O. Nilore, Islamabad, Pakistan;5. Department of Chemical & Materials Engineering, PIEAS, Islamabad, Pakistan |