设计并搭建了一台基于碳纳米管锁模的全保偏掺铒光纤激光器,输出功率为2.141 mW,重复频率为61.6924 MHz,光谱中心波长位于1563.94 nm处,半峰全宽为7.031 nm,研究了该激光器在振动方面的环境稳定性。将激光器置于振动台上,分别进行X、Y和Z方向符合卫星发射标准的加速度达到12g的鉴定级正弦振动实验和均方根加速度达到12.81grms的鉴定级随机振动实验。每次实验后测量激光器的锁模阈值、输出功率、锁模信号的信噪比、重复频率、中心波长以及谱宽。实验中发现振动后激光器仍然可以稳定锁模,光学性能也几乎没有发生变化。该研究为锁模光纤激光器的航天工程化提供了重要依据。

An all-polarization-maintaining erbium-doped mode-locked fiber laser based on carbon nanotube was designed and built. The output power was 2.141 mW, the repetition rate was 61.6924 MHz, the spectral center wavelength was at 1563.94 nm, and the full width at half maximum was 7.031 nm. The environmental stability of the laser in vibration is studied. The femtosecond fiber laser was placed on a shaking table to perform the identification-grade sinusoidal vibration test with accelerations up to 12g and the identification-grade random vibration test with root mean square acceleration of 12.81grms in the X, Y, and Z directions, respectively. After each test, the mode-locked threshold power, output power, signal-to-noise ratio of the mode-locked signal, repetition rate, center wavelength, and spectral width were measured. It was found in the experiment that the laser after vibration can still be stable in the mode-locked state, and the optical performance was not changed. This study provides an important reference for future spaceborne mode-locked fiber laser sources.