Fig. 1. Experimental setup of the continuously tunable high-power CW SF 1080/540 nm dual-wavelength laser. Nd:YAP, Nd:YAlO₃; GS, galvanometer scanner; E, etalon; SC, servo controller; OD, optical diode; PZT, piezoelectric transducer; LBO, lithium triborate; PD, photodetector; M_1–5, mirrors; FG, function generator; LPF, low pass filter; PI, proportion and integration; DC, direct current; HVA, high-voltage amplifier.

Fig. 2. Output powers of (a) 540 nm and (b) 1080 nm lasers versus pump power. Inset: spatial beam profile of output 540 nm laser.

Fig. 3. Laser power stabilities at (a) 540 nm and (b) 1080 nm : (1) long-term, (2) short-term.

Fig. 4. Measured tuning range of utilized etalon.

Fig. 5. Power fluctuation with laser wavelength.

Fig. 6. Continuous frequency scanning of the laser.

Fig. 7. Quasi-continuous frequency tuning of the laser over maximum tunable range.