Fig. 1. Schematic diagram of the passively Q-switched Raman yellow laser

Fig. 2. Variation curves of the output power with pump power at different transmittance T_OC

Fig. 3. Variation curves of the pulse repetition frequency and pulse width with pump power at different transmittance T_OC.（a）T_OC=4%; （b）T_OC=10%; （c）T_OC=20%; （d）T_OC=30%

Fig. 4. Fundamental pulse image of the passively Q-switched laser at 1030 nm.

Fig. 5. Relationship between dual-wavelength Raman optical power and pump power at different transmittance T_OC. (a) T_OC=5%; (b) T_OC=10

Fig. 6. Variation curves of the pulse repetition frequency and pulse width with pump power. (a) T_OC=5%; (b) T_OC=10%

Fig. 7. Variation curves of the pulse energy and peak power with pump power. (a) T_OC=5%; (b) T_OC=10%

Fig. 8. Raman spectra of the output at different pump powers. (a) 4.30 W; (b) 6.69 W; (c) 8.79 W; (d) 10.95 W

Fig. 9. Pulse image of the output Raman laser

Fig. 10. Variation curve of the output power with pump power after adding the etalon

Fig. 11. Variation curve of the Raman optical output characteristics with the pump power after adding the etalon. (a)Pulse repetition frequency and pulse width; (b) pulse energy and pulse peak power

Fig. 12. Raman spectra of the different pump powers after adding etalon. (a) 4.50 W; (b) 5.94 W; (c) 8.79 W; (d) 10.21 W

Fig. 13. Pulse image of the Raman output laser after adding the etalon

Fig. 14. Relationship between the average output power of 578.5 nm yellow light and the pump power

Fig. 15. Variation curve of the output characteristics of 578.5 nm yellow light with the pump power. (a) Pulse repetition frequency and pulse width; (b) pulse energy and peak power

Fig. 16. Pulse diagram of the 578.5 nm yellow light output

Fig. 17. Yellow light spectrum when the pump power is 5.94 W