We have prepared the graphene∕MoS_(2) heterostructure by a hydrothermal method,and presented its nonlinear absorption parameters and application as a nonlinear optical modulator in the mid-infrared region.Using the n...We have prepared the graphene∕MoS_(2) heterostructure by a hydrothermal method,and presented its nonlinear absorption parameters and application as a nonlinear optical modulator in the mid-infrared region.Using the nonlinear optical modulator,stable passively Q-switched operation of an Er^(3+)-doped ZrF_(4)-BaF_(2)-LaF_(3)-AlF_(3)-NaF(ZBLAN)fiber laser at~2.8μm can be obtained.The Q-switched Er^(3+)-doped ZBLAN fiber laser can yield per-pulse energy up to 2.2μJ with the corresponding pulse width and pulse repetition rate of 1.9μs and 45 kHz,respectively.Our results indicate that the graphene∕MoS_(2) heterostructure can be a robust optical modulator for pulsed lasers in the mid-infrared spectral range.展开更多
基金supported by the China Postdoctoral Science Foundation(No.2017M620349)the National Natural Science Foundation of China(Nos.61605166,11374251,and 61505124)+1 种基金the Research Foundation of Education Bureau of Hunan Province,China(No.17C1519)the Program for Changjiang Scholars and Innovative Research Team in University of China(No.IRT 17R91)
文摘We have prepared the graphene∕MoS_(2) heterostructure by a hydrothermal method,and presented its nonlinear absorption parameters and application as a nonlinear optical modulator in the mid-infrared region.Using the nonlinear optical modulator,stable passively Q-switched operation of an Er^(3+)-doped ZrF_(4)-BaF_(2)-LaF_(3)-AlF_(3)-NaF(ZBLAN)fiber laser at~2.8μm can be obtained.The Q-switched Er^(3+)-doped ZBLAN fiber laser can yield per-pulse energy up to 2.2μJ with the corresponding pulse width and pulse repetition rate of 1.9μs and 45 kHz,respectively.Our results indicate that the graphene∕MoS_(2) heterostructure can be a robust optical modulator for pulsed lasers in the mid-infrared spectral range.