Passive Q-switched Dy:ZBLAN fibre laser at 3.1 µm Fedele Pisani, Pinghua Tang, Nicola Coluccelli, Paolo Laporta and Gianluca Galzerano EPJ Web Conf., 287 (2023) 10007 Published online: 18 October 2023 DOI: 10.1051/epjconf/202328710007