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报道了基于氧化石墨烯被动锁模的超短脉冲掺铒光纤激光器。通过设计激光腔的结构,可使激光器分别运转在全负色散区以及正色散区。当激光器运行在全负色散区时,可得到重复频率为61 MHz的传统孤子脉冲输出,脉冲宽度为500fs,光谱宽度为5.7nm,最大输出功率为6mW,单脉冲能量为0.1nJ。当激光器运行在正色散区时,可得到重复频率为11.5MHz的耗散孤子脉冲输出,脉冲宽度为143ps,光谱宽度为2.4nm,最大输出功率为21mW,单脉冲能量为1.8nJ。
An ultrashort pulsed erbium-doped fiber laser based on graphene oxide passively mode-locked was reported. By designing the structure of the laser cavity, the lasers can be respectively operated in the full negative dispersion area and the positive dispersion area. When the laser is operating in the all negative dispersion region, a traditional soliton pulse output with a repetition frequency of 61 MHz is obtained. The pulse width is 500 fs, the spectral width is 5.7 nm, the maximum output power is 6 mW and the single-pulse energy is 0.1 nJ. When the laser operates in the positive dispersion region, a dissipative soliton pulse output with a repetition rate of 11.5 MHz is obtained with a pulse width of 143 ps, a spectral width of 2.4 nm, a maximum output power of 21 mW and a single pulse energy of 1.8 nJ.