Wan Peng, Yang Lih-Mei, Liu Jian
Opt Express. 2013 Dec 2;21(24):29854-9. doi: 10.1364/OE.21.029854.
Two all fiber-based laser systems are demonstrated to achieve high energy and high average power femtosecond pulsed outputs at wavelength of 1 µm. In the high energy laser system, a pulse energy of 1.05 mJ (0.85 mJ after pulse compressor) at 100 kHz repetition rate has been realized by a Yb-doped ultra large-core single-mode photonic crystal fiber (PCF) rod amplifier, seeded with a 50 µJ fiber laser. The pulse duration is 705 fs. In the high average power experiment, a large mode area (LMA) fiber has been used in the final stage amplifier, seeded with a 50 W mode locked fiber laser. The system is running at a repetition rate of 69 MHz producing 1052 W of average power before compressor. After pulse compression, a pulse duration of 800 fs was measured.
展示了两种全光纤激光系统，可在1 µm波长下实现高能量和高平均功率的飞秒脉冲输出。在高能量激光系统中，通过掺镱超大芯单模光子晶体光纤（PCF）棒放大器，以50 µJ的光纤激光器作为种子源，在100 kHz重复频率下实现了1.05 mJ的脉冲能量（经过脉冲压缩器后为0.85 mJ）。脉冲持续时间为705 fs。在高平均功率实验中，在末级放大器中使用了大模场面积（LMA）光纤，以50 W锁模光纤激光器作为种子源。该系统以69 MHz的重复频率运行，在压缩器之前产生1052 W的平均功率。经过脉冲压缩后，测得脉冲持续时间为800 fs。
