Hu Qiongyu, Chen Xiaohan, Li Ming, Li Ping, Xu Liwei, Zhao Haoxu, Zhang Bin, Liu Jing, Yang Kejian
Center for Optics Research and Engineering, Key Laboratory of Laser & Infrared System, Ministry of Education, Shandong University, Qingdao 266237, China.
School of Information Science and Engineering, Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China.
Molecules. 2022 Jan 24;27(3):745. doi: 10.3390/molecules27030745.
In this paper, antimony trisulfide (SbS) was successfully prepared with the liquid phase exfoliation method and embedded into polyvinyl alcohol (PVA) as a saturable absorber (SA) in a passively mode-locked Er-doped fiber laser for the first time. Based on SbS-PVA SA with a modulation depth of 4.0% and a saturable intensity of 1.545 GW/cm, a maximum average output power of 3.04 mW and maximum peak power of 325.6 W for the stable mode-locked pulses was achieved with slope a efficiency of 0.87% and maximum single pulse energy of 0.81 nJ at a repetition rate of 3.47 MHz under a pump power of 369 mW. A minimum pulse width value of 2.4 ps with a variation range less than 0.1 ps, and a maximum signal to noise ratio (SNR) of 54.3 dB indicated reliable stability of mode-locking, revealing promising potentials of SbS as a saturable absorber in ultrafast all-fiber lasers.
在本文中，首次采用液相剥离法成功制备了三硫化二锑（SbS），并将其作为可饱和吸收体（SA）嵌入聚乙烯醇（PVA）中，应用于被动锁模掺铒光纤激光器。基于调制深度为4.0%、饱和光强为1.545 GW/cm²的SbS-PVA可饱和吸收体，在369 mW的泵浦功率下，实现了稳定锁模脉冲的最大平均输出功率为3.04 mW，最大峰值功率为325.6 W，斜率效率为0.87%，重复频率为3.47 MHz时的最大单脉冲能量为0.81 nJ。最小脉冲宽度值为2.4 ps，变化范围小于0.1 ps，最大信噪比（SNR）为54.3 dB，表明锁模具有可靠的稳定性，揭示了SbS作为超快全光纤激光器中可饱和吸收体的潜在应用前景。
