Yang Xue, Zhenda Xie, Zhilin Ye, Xiaopeng Hu, Jinlong Xu, Han Zhang, "Enhanced saturable absorption of black phosphorus composite in 2 μm passively Q-switched Tm: YAP laser," Chin. Opt. Lett. 16, 020018 (2018)

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- Chinese Optics Letters
- Vol. 16, Issue 2, 020018 (2018)

Fig. 1. TEM images of the prepared (a) MoS 2 and (b) BP nanosheets. (c) Characteristics of Raman spectra of a few layered MoS 2 , BP, and MoS 2 –BP composite.

Fig. 2. Nonlinear transmissions of MoS 2 , BP, and MoS 2 –BP composite.

Fig. 3. Experimental setup of passively Q-switched Tm:YAP laser based on MoS 2 , BP, and MoS 2 –BP composite.

Fig. 4. Typical temporal pulse trains of Q-switched lasers based on (a) MoS 2 , (b) BP, and (c) MoS 2 –BP composite.

Fig. 5. (Color online) Variation of pulse duration and repetition frequency with absorbed pump power.

Fig. 6. (Color online) Output average powers of MoS 2 , BP, and MoS 2 –BP-based Q-switched lasers as functions of absorbed pump power.

Fig. 7. Optical spectrum of MoS 2 –BP Q-switched laser.
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Table 1. Q-switched Output Characteristics of Three SAs

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