Fig. 1. Optical path diagram of RBG-OPO laser^[7]

Fig. 2. Schematic diagram of 485 nm blue laser output by thulium-doped fiber laser^[9]

Fig. 3. Experimental setup of acousto-optic Q-switched Nd∶YAG single-crystal fiber laser^[10]

Fig. 4. Schematic diagram of VCSEL side-pumped Nd∶YAG blue laser^[11]

Fig. 5. Schematic diagram of quadruple frequency 1946 nm fiber laser amplifier^［12］

Fig. 6. Experimental setup of electro-optic Q-switched Nd∶YAP blue laser^[14]

Fig. 7. Experimental setup of high repetition rate 473 nm blue laser^[15]

Fig. 8. Experimental setup of electro-optic Q-switched 473 nm blue laser^[17]

Fig. 9. Experimental setup of high repetition rate 486 nm blue laser

Fig. 10. Output power curve of 355 nm ultraviolet laser

Fig. 11. Pulse profiles of fundamental laser and ultraviolet laser

Fig. 12. Output power of signal laser in single crystal OPO

Fig. 13. Pulse profile of OPO output signal laser

Fig. 14. Experimental setup of high energy blue pulsed laser

Fig. 15. OPO signal laser energy varying with pump laser energy

Fig. 16. Output spectrum of OPO blue laser

Fig. 17. Spectrum of blue laser seed

Fig. 18. Spectrum of seeded OPO blue laser