Hao Qiang, Li Wenxue, Zeng Heping
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
Opt Express. 2009 Mar 30;17(7):5815-21. doi: 10.1364/oe.17.005815.
We demonstrated the synchronized high-power ytterbium-doped fiber amplification of the near-infrared spectral fraction of a few-cycle Ti:sapphire laser at 79.5-MHz repetition rate, which was experimentally realized with a two-stage ytterbium-doped fiber pre-amplifier and a two-stage double-clad fiber power amplifier in cascade. An overall power amplification up to 86.1 dB was achieved at 1030 nm with sufficient suppression of amplified spontaneous emission noises, achieving to the best of our knowledge the highest synchronized laser pulses of 262 W in average power. The amplified high-power pulses were demonstrated to maintain good temporal synchronization with the few-cycle signal pulses.
我们展示了在79.5MHz重复频率下，对几周期钛宝石激光器近红外光谱部分进行同步高功率掺镱光纤放大，这是通过两级掺镱光纤前置放大器和两级双包层光纤功率放大器级联实验实现的。在1030nm处实现了高达86.1dB的总功率放大，同时充分抑制了放大自发辐射噪声，据我们所知，实现了平均功率为262W的最高同步激光脉冲。结果表明，放大后的高功率脉冲与几周期信号脉冲保持了良好的时间同步。
