MoS2 for self-started mode-locked fiber laser

In this paper, we reported a simple and compact all-fiber erbium-doped femtosecond laser mode-locked by fiber-taper molybdenum disulfide (MoS2) saturable absorber (SA). The SA was prepared by magnetron-sputtering deposition (MSD) method, directly growing MoS2 film and then gold film on the microfiber. Based on this SA, the oscillator operated in soliton state, and delivered 478 fs pulses with 6.2 nm bandwidth and 24.7 MHz repetition frequency. Experimental results showed that MSD grown fiber-taper MoS2 can develop into promising photonic devices for ultrafast photonics.