Markovic Vesna, Rohrbacher Andreas, Hofmann Peter, Pallmann Wolfgang, Pierrot Simonette, Resan Bojan
Opt Express. 2015 Oct 5;23(20):25883-8. doi: 10.1364/OE.23.025883.
We demonstrate a compact and simple two-stage Yb:YAG single crystal fiber amplifier which delivers 160 W average power, 800 fs pulses without chirped pulse amplification. This is the highest average power of femtosecond laser based on SCF. Additionally, we demonstrate the highest small signal gain of 32.5 dB from the SCF in the first stage and the highest extraction efficiency of 42% in the second stage. The excellent performance of the second stage was obtained using the bidirectional pumping scheme, which is applied to SCF for the first time.
我们展示了一种紧凑且简单的两级镱钇铝石榴石（Yb:YAG）单晶光纤放大器，该放大器无需啁啾脉冲放大即可输出160瓦平均功率、800飞秒脉冲。这是基于单晶光纤的飞秒激光器的最高平均功率。此外，我们展示了第一级单晶光纤的最高小信号增益为32.5分贝，以及第二级的最高提取效率为42%。第二级的优异性能是通过双向泵浦方案获得的，该方案首次应用于单晶光纤。
