1 Dipartimento di Fisica, Università di Napoli "Federico II," Piazzale Tecchio 80, I-80125 Naples, Italy.
2 CNR-SPIN, UOS Napoli, via Cinthia, I-80126 Naples, Italy.
3 CRANN & AMBER Center, School of Chemistry, Trinity College Dublin, Dublin 2, Ireland.
4 School of Engineering, Newcastle University, Merz Court, Newcastle upon Tyne NE1 7RU, UK.
5 Institute of Physics, EIT 2, Faculty of Electrical Engineering and Information Technology, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, EIT2, 85577 Neubiberg, Germany.
The exponential factor in Equation (1) of the paper published in Materials [1] reports a misprintand the correct expression of the transmission function is [...].