报道了主动锁模飞秒脉冲掺Er3+光纤激光器的实验结果。在光纤环形腔中通过引入粗波分复用器(CWDM)作为宽带滤波器,实现了中心波长在1550 nm,重复频率为2.5 GHz,谱线3 dB带宽为10.2 nm(对应的脉冲宽度为247 fs)的激光脉冲输出。此时的抽运功率为186 mW,激光器输出平均功率为1.3 mW,从而获得了能够产生飞秒脉冲的高重复频率主动锁模掺Er3+光纤激光器。

An actively mode-locked femtosecond pulse fiber laser with coorse wavelength division multiplexing (CWDM) as the filter was successfully achieved. When the laser was pumped at 186 mW, the mode-locked pulses centered at 1550 nm with 10.2 nm bandwidth (corresponding to 247 fs pulse width) was obtained at the repetition rate of 2.5 GHz. The average output power of the laser was 1.3 mW.