Diode-End-Pumped Continuous-Wave and Q-Switched Nd:GdVO4/KTP Laser at 671 nm

We have demonstrated a diode-end-pumped continuous-wave and Q-switched Nd:GdVO4 red laser through intracavity frequency-doubling with a type-II phase-matched KTP crystal. The maximum CW output power at 671 nm was measured to be 505 mW at the incident pump power of 12 W, with the corresponding optical conversion efficiency of 4.2%. When the repetition frequency was 15 kHz, the maximum quasi-CW red output power was obtained to be 781 mW, with the corresponding optical conversion efficiency of 6.5%, the shortest pulse width of 65 ns, the highest pulse energy of 52 µJ and the highest peak power of 801 W.