Scientific collaborations with the Department of Materials-University of Leeds, Centro Laser di Valenzano (Bari), Centro Studi Chimica Plasmi (Bari), INFM (Lecce), CNR-FSA (Trento), University of Rennes (France), Institut de Recherche en Ingenierie Moleculaire et Materiaux Fonctionnels, UMR CNRS - Le Mans (France), Laboratoire de Physique de l'Universite' de Bourgogne (France), the Physics Dep. Shiraz University, Shiraz, Iran; Institute for Photonics & Advanced Sensing (IPAS), Center of Expertise in Photonics (CoEP)- University of Adelaide, Universite' Jean Monnet Saint-Etienne Cedex, Tokyo Institute of Technology, Department of Chemistry and Materials, JAPAN, Lab. Hubert Curien, UMR-CNRS 5516, Universite' de Saint-Etienne; Dipartimento di Scienze Fisiche ed Astronomiche - Universita' di Palermo; CEA, DAM, DIF Arpajon, France.