Thipparapu N K, Guo C, Umnikov A A, Barua P, Taranta A, Sahu J K
Opt Lett. 2017 Dec 15;42(24):5102-5105. doi: 10.1364/OL.42.005102.
We demonstrate a 1340 nm mode-locked Bismuth (Bi)-doped fiber laser without any saturable absorber. The effect of pump power on pulse width is studied, and a variation from 1.5 to 3 ns is reported. The output of the mode-locked Bi-doped fiber laser is further amplified using a master oscillator power amplifier configuration, and a peak power of 1.15 W is achieved. Soliton bunching is observed, and a true pulse width of 1.2 ps is reported from the measured autocorrelation trace. Stable operation of the mode-locked laser is verified from the radio-frequency spectrum with a fundamental repetition rate of 6.3 MHz, and SNR of 65 dB.
我们展示了一种无需任何饱和吸收体的1340纳米锁模掺铋光纤激光器。研究了泵浦功率对脉冲宽度的影响，报道了脉冲宽度在1.5至3纳秒之间的变化。利用主振荡功率放大器配置对锁模掺铋光纤激光器的输出进行了进一步放大，实现了1.15瓦的峰值功率。观察到孤子聚束现象，从测量的自相关迹线中报道了1.2皮秒的真实脉冲宽度。从射频频谱验证了锁模激光器的稳定运行，其基频重复率为6.3兆赫，信噪比为65分贝。
