对国产掺镱(Yb3+)双包层大模场面积光纤超短脉冲放大器进行了系统的实验研究。以自己搭建的脉冲宽度为2.3ps,重复频率为95MHz的全固态锁模激光器作为种子源,以976nm大功率光纤耦合激光二极管为抽运源,以1.6m国产掺Yb3+双包层大模场面积光纤为增益介质,在11.2W的入纤抽运功率下,将平均功率为100mW的脉冲种子光放大到平均功率2.41W,单脉冲能量达到了25nJ,放大后脉冲的宽度(时域宽度)和光谱都有所展宽。 A systematic experiment on domestic ytterbium (Yb3 +) double-clad large mode field fiber ultrashort pulse amplifier was carried out. The self-built pulse width of 2.3ps, the repetition frequency of 95MHz all-solid-state mode-locked laser as a seed source to 976nm high-power fiber-coupled laser diode pumping source to 1.6m domestic Yb3 + doped double-clad large mode field area The optical fiber is a gain medium. Under the input pumping power of 11.2W, the pulse seed light with an average power of 100mW is amplified to an average power of 2.41W, the single-pulse energy reaches 25nJ, and the amplified pulse width (time domain width) and The spectrum is widened.