▎ 摘　　要

NOVELTY - The utility model claims a super short pulse fiber laser system is of graphene saturated absorb body lock mode, comprising annular optical fiber laser seed source and chirped amplifier, said annular fibre laser seed source comprises graphene saturated absorb body, wave dividing MUX (Multiplexer), Yb-doped active region optical fiber, the first passive optical fiber, output coupler, with way filter, light isolator and the second passive optical fiber, said chirped amplifier comprises one level in turn connected with the stretcher, one grade amplifier and negative dispersion element, one class of active region optical fiber amplifier, and pumping source composed of combiner. The annular fibre laser seed source of the utility modelutility model is capable of output linear chirp pulse, the linear chirp pulse following amplification in the amplifier and negative chirp component dispersion compensation function, to obtain amplification and chirp removing to obtain femtosecond pulse, femtosecond Yb-doped fiber laser be realize. The utility model fills technology blank of Yb-doped femtosecond fiber laser.