Solution processed MoS2-PVA composite for sub-bandgap mode-locking of a wideband tunable ultrafast Er:fiber laser

• DOI: 10.1007/s12274-014-0637-2
• Publication Date: 2015-03-11T13:45:37Z
• Authors: Meng Zhang; Richard C. T. Howe; Robert I. Woodward; Edmund J. R. Kell...; Felice Torrisi; Guohua Hu; Sergei V. Popov; J. Roy Taylor; Tawfique Hasan
• Keywords: Molybdenum disulfide; Picosecond; Exfoliation joint

Abstract We fabricate a free-standing few-layer molybdenum disulfide (MoS 2 )-polymer composite by liquid phase exfoliation of chemically pristine MoS2 crystals and use this to demonstrate wideband tunable, ultrafast mode-locked fiber laser. Stable, picosecond pulses, tunable from 1,535 nm 1,565 nm, are generated, corresponding photon energies below the MoS material bandgap. These results contribute growing body work studying nonlinear optical properties transition metal dichalcogenides that present new opportunities for photonic applications.