Mode-Locked Er-Doped Fiber Laser by Using MoS2/SiO2 Saturable Absorber

Nanoscale Research Letters

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[1] 0000 0004 1759 8395, grid.412498.2, School of Physics and information Technology, Shaanxi Normal University, 710119, Xi’an, China;grid.464492.9, School of Science, Xi’an University of Posts and Telecommunications, 710121, Xi’an, China;

关键词: Transition metal dichalcogenides;    Nonlinear optical materials;    Saturable absorbers;   

DOI  :  10.1186/s11671-019-2888-z

来源: publisher

【 摘 要 】

The two-dimensional (2D) layered material MoS2 has attracted numerous attentions for electronics and optoelectronics applications. In this work, a novel type of MoS2-doped sol-gel glass composite material is prepared. The nonlinear optical properties of prepared MoS2/SiO2 composite material are measured with modulation depth (ΔT) of 3.5% and saturable intensity (Isat) of 20.15 MW/cm2. The optical damage threshold is 3.46 J/cm2. Using the MoS2/SiO2 composite material as saturable absorber (SA), a passive mode-locked Er-doped fiber (EDF) laser is realized. Stable conventional soliton mode-locking pulses are successfully generated with a pulse width of 780 fs at the pump power of 90 mW. In the pump power range of 100–600 mW, another stable mode-locking operation is obtained. The pulse width is 1.21 ps and the maximum output power is 5.11 mW. The results indicate that MoS2/SiO2 composite materials could offer a new way for optical applications.

【 授权许可】

CC BY