Fig. 1. Experimental setup of SBS passive Q-switched laser

Fig. 2. SBS passive Q-switching process

Fig. 3. Relationship between SBS threshold and length of 1060-XP fiber

Fig. 4. Output power varies with pump power

Fig. 5. Output spectra of output 2 at different output powers

Fig. 6. Output spectrum of output 1 with stabilized Q-switching

Fig. 7. Repetition rate varies with pump power

Fig. 8. Pulses of output 1 at different output powers

Fig. 9. Single-pulse image outputs from output 1

Fig. 10. Single-pulse image outputs from output 2

Fig. 11. Peak power varies with pump power