Li Huanhuan, Wang Zhaokun, Li Can, Zhang Junjie, Xu Shiqing
Opt Express. 2017 Oct 30;25(22):26546-26553. doi: 10.1364/OE.25.026546.
We demonstrate a mode-locked all-fiber Tm laser using a single mode-step index multimode-graded-index multimode-single mode fiber structure as a saturable absorber based on the nonlinear multimodal interference. Stable fundamentally mode-locking operation was obtained at a pump threshold of 180mW. The output soliton pulses had a center wavelength, spectral width, pulse duration, and repetition rate of 1888 nm, 3.6 nm, 1.4 ps, and19.82 MHz, respectively. This is a simple, low-cost, stable, and convenient laser oscillator with many potential applications in eye-safe ultrafast photonics.
我们展示了一种锁模全光纤Tm激光器，它使用单模-阶跃折射率-多模-渐变折射率-多模-单模光纤结构作为基于非线性多模干涉的饱和吸收体。在180mW的泵浦阈值下获得了稳定的基模锁模运转。输出孤子脉冲的中心波长、光谱宽度、脉冲持续时间和重复率分别为1888nm、3.6nm、1.4ps和19.82MHz。这是一种简单、低成本、稳定且方便的激光振荡器，在人眼安全超快光子学中有许多潜在应用。
