E. N. Petrakakis is a PhD Candidate in Applied Theoretical Laser – Matter Interaction Physics at the Dept. Material Science & Technology of Univ. of Crete under the supervision of Dr. Tsibidis George. He received his M.Sc. in Advanced Theoretical Physics from University of Crete in 2016. He has been a Temporary Associate Researcher in the A&M Texas University of Qatar in 2017. He has been a scientific collaborator and short temporary visitor to the Lasers, Plasmas and Photonic Processes (LP3) laboratory in Aix – Marseille University at France.