We have demonstrated the stable Q-switched Er-doped fluoride fiber laser with the help of the few-layered Ta ₂ NiS ₅ in the mid-infrared spectral range. We fabricated the mid-infrared saturable absorber mirror (SAM) by depositing the layered Ta ₂ NiS ₅ on a gold mirror. The layered Ta ₂ NiS ₅ exhibited saturable absorption behavior with modulation depth 36% and saturation intensity 32.2 GW/cm ² at 2800 nm, respectively. With the Ta ₂ NiS ₅ -SAM, stable Q-switched pulses around 2.8 μm wavelength can be delivered with a pulse duration of 1.20 μs and a repetition rate of 102 kHz under an incident pump power of 860 mW from the ZBLAN fiber laser cavity. The experimental results confirm that Ta ₂ NiS ₅ has great potentials as broadband saturable absorber in mid-infrared regions, paving the way for the application of low-dimensional ternary chalcogenide in broadband optoelectronic devices.

中文翻译：

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用于中红外氟化物光纤激光器的层状 Ta2NiS5 调Q器


我们借助中红外光谱范围内的少层Ta ₂ NiS ₅展示了稳定的调Q掺铒氟化物光纤激光器。我们通过在金镜上沉积层状 Ta ₂ NiS ₅制造了中红外可饱和吸收镜（SAM）。层状Ta ₂ NiS ₅在2800 nm处表现出调制深度36%和饱和强度32.2 GW/cm ²的饱和吸收行为。使用 Ta ₂ NiS ₅ -SAM，在 ZBLAN 光纤激光腔的入射泵浦功率为 860 mW 的情况下，可以以 1.20 μs 的脉冲持续时间和 102 kHz 的重复频率提供波长约为 2.8 μm 的稳定 Q 开关脉冲。实验结果证实Ta ₂ NiS ₅作为中红外区宽带可饱和吸收体具有巨大潜力，为低维三元硫属化物在宽带光电器件中的应用铺平了道路。