Solution processed MoS2-PVA composite for sub-bandgap mode-locking of a wideband tunable ultrafast Er:fiber laser - Zhang, M; Howe, RCT; Woodward, RI; Kelleher, EJR; Torrisi, F; Hu, G; Popov, SV; Taylor, JR; Hasan, T (Nano Research, 2015)