Wang Li, Chen Weidong, Zhao Yongguang, Wang Yicheng, Pan Zhongben, Lin Haifeng, Zhang Ge, Zhang Lizhen, Lin Zhoubin, Bae Ji Eun, Park Tae Gwan, Rotermund Fabian, Loiko Pavel, Mateos Xavier, Mero Mark, Griebner Uwe, Petrov Valentin
Opt Lett. 2020 Nov 15;45(22):6142-6145. doi: 10.1364/OL.411288.
We demonstrate sub-100-fs Kerr-lens mode-locking of a : laser emitting at ∼2µ assisted by a single-walled carbon-nanotube saturable absorber. A maximum average output power of 100 mW is achieved with pulse duration of 89 fs at a pulse repetition rate of ∼86. The shortest pulse duration derived from frequency-resolved optical gating amounts to 76 fs at 2037 nm, corresponding to nearly bandwidth-limited pulses. To the best of our knowledge, these are the shortest pulses generated from any Tm-doped tungstate crystal and the first report on saturable absorber assisted Kerr-lens mode-locking of a Tm laser at ∼2µ.
我们展示了在单壁碳纳米管可饱和吸收体的辅助下，对发射波长约为2μm的掺铥激光进行亚100飞秒克尔透镜锁模。在脉冲重复频率约为86时，实现了100毫瓦的最大平均输出功率，脉冲持续时间为89飞秒。通过频率分辨光学门控得到的最短脉冲持续时间在2037纳米处为76飞秒，对应于几乎带宽受限的脉冲。据我们所知，这些是从任何掺铥钨酸盐晶体产生的最短脉冲，也是关于在约2μm波长下可饱和吸收体辅助掺铥激光克尔透镜锁模的首次报道。
