Mid-infrared generation beyond 3.5 µm in a graded-index silica fiberKarolina Stefanska, Pierre Bejot, Julien Fatome, Guy Millot, Karol Tarnowski and Bertrand KiblerEPJ Web Conf., 287 (2023) 06026DOI: https://doi.org/10.1051/epjconf/202328706026