Sun Ji, Zhou Yue, Dai Yitang, Li Jianqiang, Yin Feifei, Dai Jian, Xu Kun
Appl Opt. 2018 Feb 20;57(6):1492-1496. doi: 10.1364/AO.57.001492.
In this paper, we build a mode-locked all-polarization-maintaining figure-of-8 erbium-doped fiber oscillator based on a nonlinear amplifying loop mirror. The fiber oscillator can generate 1.6 ps chirped pulses that can be de-chirped to 500 fs at 1550 nm with a pulse energy of 0.8 nJ and a repetition rate of 12 MHz. It can be further amplified up to 10 nJ and compressed down to 100 fs with a pre-chirp managed nonlinear amplification setup. Such an oscillator and amplifier configuration has the advantages of self-starting and long-term operation, and it is highly suitable for subsequent frequency conversion, which is desirable for many applications in ultrafast microscopy and precision spectroscopy.
在本文中，我们基于非线性放大环形镜构建了一个锁模全保偏8字形掺铒光纤振荡器。该光纤振荡器能够产生1.6皮秒的啁啾脉冲，在1550纳米波长处，通过去啁啾可将其压缩至500飞秒，脉冲能量为0.8纳焦，重复频率为12兆赫。利用预啁啾管理的非线性放大装置，它可进一步放大至10纳焦，并压缩至100飞秒。这种振荡器和放大器配置具有自启动和长期运行的优点，非常适合后续的频率转换，这在超快显微镜和精密光谱学的许多应用中是很有必要的。
