Kim Seungman, Kim Yunseok, Park Jiyong, Han Seunghwoi, Park Sanguk, Kim Young-Jin, Kim Seung-Woo
Ultrafast Optics for Ultraprecision Group, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea.
Opt Express. 2012 Jul 2;20(14):15054-60. doi: 10.1364/OE.20.015054.
We report on an Er-doped fiber oscillator that produces 146 fs pulses with 156 mW average power at a repetition rate of 49.9 MHz. The pulse energy reaches 3.13 nJ, surpassing the conventional power limit in the dispersion-managed soliton regime. Such high pulse power is obtained by devising a hybrid mode-locking scheme that combines saturable absorption with nonlinear polarization evolution. The oscillator also offers excellent temporal purity in the generated pulses with high power, providing a robust fiber-based frequency comb well suited for industrial uses.
我们报道了一种掺铒光纤振荡器，它能产生脉宽为146 fs、平均功率为156 mW、重复频率为49.9 MHz的脉冲。脉冲能量达到3.13 nJ，超过了色散管理孤子 regime 中的传统功率极限。通过设计一种将饱和吸收与非线性偏振演化相结合的混合锁模方案获得了如此高的脉冲功率。该振荡器在产生的高功率脉冲中还具有出色的时间纯度，提供了一种非常适合工业用途的基于光纤的稳健频率梳。
