Fig. 1. TEM images of the prepared (a) MoS2 and (b) BP nanosheets. (c) Characteristics of Raman spectra of a few layered MoS2, BP, and MoS2–BP composite.

Fig. 2. Nonlinear transmissions of MoS2, BP, and MoS2–BP composite.

Fig. 3. Experimental setup of passively Q-switched Tm:YAP laser based on MoS2, BP, and MoS2–BP composite.

Fig. 4. Typical temporal pulse trains of Q-switched lasers based on (a) MoS2, (b) BP, and (c) MoS2–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 MoS2, BP, and MoS2–BP-based Q-switched lasers as functions of absorbed pump power.

Fig. 7. Optical spectrum of MoS2–BP Q-switched laser.