V3+:YAG as the saturable absorber for a diode-pumped quasi-three-level dual-wavelength Nd:GGG laser.

ABSTRACT

The performance of a diode-end-pumped passively Q-switched dual-wavelength NdGGG laser operating at 932.9 and 936.5 nm with V(3+)YAG as the saturable absorber was demonstrated for the first time to the best of our knowledge. The maximum dual-wavelength average output power of 150 mW was achieved with a T = 2% output coupler under the absorbed pump power of 2.55 W, corresponding to the optical-to-optical conversion and slope efficiency of 5.9% and 8.0%, respectively. The minimum pulse width was 395 ns with the pulse repetition frequency of 140 kHz, which was attained with a T = 5% output coupler under the absorbed pump power of 2.55 W.