摘要
We experimentally demonstrate a long-term stable two-dimensional saturable absorption material under ambient conditions—multi-layer antimonene feasible for the mid-infrared spectral region—for the first time to our knowledge. The multi-layer antimonene material prepared using a liquid-phase exfoliation method was coated on a quartz/Ca F_2 for characterizations and an Au mirror as a reflection-type saturable absorber(SA) device. It has a modulation depth of 10.5%, a saturation peak intensity of 0.26 GW∕cm^2, and a non-saturation loss of 19.1% measured at 2868.0 nm using the typical power-dependent method. By introducing the SA device into a linear-cavity Ho^(3+)∕ Pr^(3+)-codoped fluoride fiber laser at 2865.0 nm, stable Q-switched pulses were obtained. It generated a maximum output power of 112.3 m W and pulse energy of 0.72 μJ, while the shortest pulse duration and largest repetition rate were 1.74 μs and 156.2 k Hz, respectively. The long-term stability of the SA device was also checked using the same laser setup within 28 days. The results indicate that multi-layer antimonene is a type of promising long-term stable SA material under ambient conditions that can be applied in the mid-infrared spectral region.
We experimentally demonstrate a long-term stable two-dimensional saturable absorption material under ambient conditions--multi-layer antimonene feasible for the mid-infrared spectral region--for the first time to our knowl- edge. The multi-layer antimonene material prepared using a liquid-phase exfoliation method was coated on a quartZ/CaF2 for characterizations and an Au mirror as a reflection-type saturable absorber （SA） device. It has a modu- lation depth of 10.5%, a saturation peak intensity of 0.26 GW/cm2, and a non-saturation loss of 19.1% measured at 2868.0 nm using the typical power-dependent method. By introducing the SA device into a linear-cavity Ho3＋/Pr3＋-codoped fluoride fiber laser at 2865.0 nm, stable Q-switched pulses were obtained. It generated a maxi- mum output power of 112.3 mW and pulse energy of 0.72 pJ, while the shortest pulse duration and largest repetition rate were 1.74 μs and 156.2 kHz, respectively. The long-term stability of the SA device was also checked using the same laser setup within 28 days. The results indicate that multi-layer antimonene is a type of promising long-term stable SA material under ambient conditious that can be applied in the mid-infrared spectral region. 2018 Chinese Laser Press
基金
National Natural Science Foundation of China(NSFC)(61722503,61435003,61421002)
Open Fund of Science and Technology on Solid-State Laser Laboratory
Fundamental Research Funds for the Central Universities(ZYGX2016J068)
International Scientific Cooperation Project of Sichuan Province(2017HH0046)
National Key R&D Program of China(YS2018YFB110012)
Natural Science Foundation of Zhejiang Province(LQ18A040004)
