Approaching microjoule-level pulse energy with mode-locked femtosecond fiber lasers.
Approaching microjoule-level pulse energy with mode-locked femtosecond fiber lasers.
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DOI：
10.1364/ol.34.001585
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发表时间：
2009-05
期刊：
影响因子：
3.6
通讯作者：
B. Ortaç;M. Baumgartl;J. Limpert;A. Tünnermann
中科院分区：
文献类型：
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作者：
B. Ortaç;M. Baumgartl;J. Limpert;A. Tünnermann
我们报道了在全正常色散状态下工作的锁模掺镱大模面积光纤激光器产生的高能超短脉冲。自启动光纤激光器在脉冲重复频率为9.7 MHz的情况下，平均输出功率为9w，对应脉冲能量为927 nJ。激光器产生8ps的正啁啾输出脉冲，然后压缩到711fs。这些压缩脉冲显示出兆瓦级的峰值功率。据我们所知，这是锁模光纤振荡器第一次产生脉冲能量接近微焦耳水平的飞秒脉冲，同时具有高平均输出功率。数值模拟结果与实验结果吻合良好，并揭示了进一步的标化潜力。
We report on the generation of high-energy ultrashort pulses from a mode-locked Yb-doped large-mode-area fiber laser operating in the all-normal dispersion regime. The self-starting fiber laser emits 9 W of average output power at a pulse repetition rate of 9.7 MHz, corresponding to a pulse energy of 927 nJ. The laser produces positively chirped 8 ps output pulses, which are then compressed down to 711 fs. These compressed pulses exhibit megawatt-level peak powers. To our knowledge, this is the first time that a mode-locked fiber oscillator has generated femtosecond pulses with pulse energies approaching the microjoule level in combination with high average output power. Numerical simulations show excellent agreement with experimental results and reveal further scaling potential, which is discussed.