1. WestCHEM University of Glasgow Joseph Black Building School of Chemistry University Avenue G12 8QQ Glasgow UK
2. Research Group of Optical Properties of Materials (GPOM) Centro de Investigaciones en Óptica A.P. 1-948 C.P. 37000 León Guanajuato México
3. Technische Universität Dresden Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) Nöthnitzer Str. 61 01187 Dresden Germany