Appl Opt. 2023 Mar 1;62(7):1672-1676. doi: 10.1364/AO.482184.
In this work, we investigate an approach to scale up the output pulse energy in an all-polarization-maintaining 17.3 MHz Yb-doped fiber oscillator via implementation of a 25 µm core-diameter large-mode-area fiber. The artificial saturable absorber is based on a Kerr-type linear self-stabilized fiber interferometer, enabling non-linear polarization rotation in polarization-maintaining fibers. Highly stable mode-locked steady states in the soliton-like operation regime are demonstrated with 170 mW average output power and a total output pulse energy of ∼10 distributed between two output ports. An experimental parameter comparison with a reference oscillator constructed with 5.5 µm core-sized standard fiber components reveals an increase of pulse energy by a factor of 36 with simultaneously reduced intensity noise in the high-frequency range >100 .
在这项工作中，我们研究了一种通过在 25 µm 芯径大模场光纤中实现的方法，来提高全偏振保持 17.3 MHz Yb 掺杂光纤振荡器的输出脉冲能量。基于 Kerr 型线性自稳定光纤干涉仪的人造可饱和吸收体，可在偏振保持光纤中实现非线性偏振旋转。在孤子类似运行模式下，实现了高度稳定的锁模稳态，平均输出功率为 170 mW，总输出脉冲能量约为 10 ，分布在两个输出端口之间。与使用 5.5 µm 芯径标准光纤组件构建的参考振荡器的实验参数比较表明，输出脉冲能量增加了 36 倍，同时高频范围内（>100 ）的强度噪声降低了。
