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A compact saturable absorber mirror(SAM) based on few-layer molybdenum disulfide(MoS_2) nanoplatelets was fabricated and successfully used as an efficient saturable absorber(SA) for the passively Q-switched solid-state laser at 1 μm wavelength. Pulses as short as 182 ns were obtained from a ytterbium-doped(Yb:LGGG) bulk laser Q-switched by the MoS_2 SAM, which we believe to be the shortest one ever achieved from the MoS_2 SAs-based Q-switched bulk lasers. A maximum average output power of 0.6 W was obtained with a slope efficiency of 24%,corresponding to single pulse energy up to 1.8 μJ. In addition, the simultaneous dual-wavelength Q-switching at 1025.2 and 1028.1 nm has been successfully achieved. The results indicate the promising potential of few-layer MoS_2 nanoplatelets as nonlinear optical switches for achieving efficient pulsed bulk lasers.
A compact saturable absorber mirror (SAM) based on few-layer molybdenum disulfide (MoS_2) nanoplatelets was fabricated and successfully used as an efficient saturable absorber (SA) for the passively Q-switched solid-state laser at 1 μm wavelength. Pulses as short as 182 ns were obtained from a ytterbium-doped (Yb: LGGG) bulk laser Q-switched by the MoS_2 SAM, which we believe to be the shortest one ever achieved from the MoS_2 SAs-based Q-switched bulk lasers. The output of 0.6 W was obtained with a slope efficiency of 24%, corresponding to single pulse energy up to 1.8 μJ. In addition, the simultaneous dual-wavelength Q-switching at 1025.2 and 1028.1 nm has been successfully achieved. promising potential of few-layer MoS_2 nanoplatelets as nonlinear optical switches for achieving efficient pulsed bulk lasers.