Fig. 1. Experimental setup of Nd∶YVO₄-YVO₄-Cr⁴⁺∶YAG passively Q-switched intracavity self-mode-locked Raman laser based on compound cavity structure

Fig. 2. Output power of Q-switched mode-locked 1176 nm laser varying with pump power for T=2% and T=5%

Fig. 3. Pulse waveform of 1176 nm Q-switched mode-locked output laser (P_stokes=0.81 W)

Fig. 4. Output power of Q-switched mode-locked 1176 nm laser at different Raman cavity length and different curvature. (a) Output power of Q-switched mode-locked 1176 nm laser varying with pump power at different length of Raman cavity (R=100 mm); (b) maximum output power of Q-switched mode-locked 1176 nm Raman laser and maximum efficiency varying with length of Raman cavity at different curvature

Fig. 5. Comparison of 1176 nm Q-switched mode-locked pulse waveforms with different length of Raman cavity (R=100 mm). (a) L_R=100 mm; (b) L_R=110 mm; (c) L_R=120 mm; (d) L_R=130 mm

Fig. 6. Pulse waveforms of residual 1064 nm Q-switched mode-locked laser. (a) Near the threshold; (b) P_stokes=1.23 W

Fig. 7. Pulse waveform and spectrum of 1176 nm Q-switched mode-locked laser. (a) P_stokes=1.19 W; (b) P_stokes=1.23 W

Fig. 8. Spot profile and beam quality of 1176 nm Q-switched mode-locked laser (P_stokes=1.23 W)