Sami S. Alharthi is an associate professor of Photonics and Laser Physics. He is also concerned with the production of optical materials, specifically polymeric nanocomposites, their characteristics and their applications. He is interested in nonlinear laser dynamics under optical injection and its applications in optical communication.  He is the supervisor of the Optics and Laser Physics Lab at the Department of Physics, Taif University, Taif, Saudi Arabia.