Pinghua Tang, Yue Tao, Yuliang Mao, Man Wu, Zongyu Huang, Shengnan Liang, Xinhang Chen, Xiang Qi, Bin Huang, Jun Liu, Chujun Zhao, "Graphene/MoS2 heterostructure: a robust mid-infrared optical modulator for Er3+-doped ZBLAN fiber laser," Chin. Opt. Lett. 16, 020012 (2018)

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- Chinese Optics Letters
- Vol. 16, Issue 2, 020012 (2018)

Fig. 1. Characterizations of the graphene / MoS 2 heterostructure. (a) SEM image, (b) XRD pattern, and (c) Raman spectrum of the graphene / MoS 2 heterostructure sample. (d) The measured nonlinear power-dependent reflectivity of the graphene / MoS 2 heterostructure modulator.

Fig. 2. Experimental setup of the graphene / MoS 2 heterostructure Q -switched Er 3 + -doped ZBLAN fiber laser. G / MoS 2 , graphene / MoS 2 heterostructure.

Fig. 3. Oscilloscope traces of the Q -switched pulses with different incident powers. (a), (b), (c), and (d) with an incident pump power of 1.9, 2.7, 3.4, and 4.1 W, respectively.

Fig. 4. Output characteristics of the graphene / MoS 2 heterostructure Q -switched Er 3 + -doped ZBLAN fiber laser. (a) Pulse width and pulse repetition rate and (b) output power and per-pulse energy versus incident pump power; (c) output spectrum and (d) RF spectrum at the average output power of 100 mW.

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