The graphene-oxide-based passively Q-switched erbium-doped fiber laser is first reported. The laser adopts ring cavity configuration, and the Q-switcher is the self-made graphene oxide saturable absorber mirror. Stable Q-switehed pulses with the frequency of 68~124 kHz and pulse width of 0. 47~1. 6 μs are output at 80~505 mW incident pump power. Limited by the pump power, the maximum output power is 10 mW, corresponding to the single pulse energy of 80.6 nJ. This kind of new Q-switched fiber laser with graphene oxide as the saturable absorber will have great applications, due to its advantages of low price, simple design and high stability.%报道了基于氧化石墨烯的被动调Q掺铒光纤激光器.激光器采用环形腔结构,调Q器件为自制的氧化石墨烯可饱和吸收镜.泵浦功率在81～505 mW范围内时,得到了重复频率68～124 kHz的稳定的调Q脉冲输出,脉宽为0.47～1.60 μs.由于泵浦功率限制,激光器最大输出功率为10 mW,相应单脉冲能量为80.6 nJ.此种基于氧化石墨烯可饱和吸收体的被动调Q光纤激光器体积小、成本低廉、结构简单、稳定性高、光束质量高,具有广阔的应用前景.
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