Fig. 1. Schematic of DRO experimental setup

Fig. 2. (a) Input pump laser pulse profile; (b) pump laser spot at the center of crystal

Fig. 3. (a) Temperature tuning curves for PPMgLN crystal pumped by laser with wavelength of 1064 nm; (b) PPMgLN-OPO laser output power versus pump power when T=30%

Fig. 4. Pulse profiles of residual pump laser and output signal laser with wavelength of 1.5 μm at different pump powers. (a) Ppump=50 mW; (b) Ppump=300 mW

Fig. 5. (a) Spot intensity and (b) spectrum of signal laser and (c) spectrum of idler laser

Fig. 6. (a) Central frequency and (b) linewidth of OPO output signal laser with injection seeding

Fig. 7. Variations of central wavelengths of seed laser and output signal laser as a function of time